Malicious PDF — malware analysis report

Static analysis result for SHA-256 364bcf32c7af2525…

MALICIOUS

PDF

76.4 KB Created: 2021-09-02 05:25:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-21
MD5: 645f2118b9c793c032a18775605ab824 SHA-1: 64c112aa0ee155a98a9a69fa08147907c85ac729 SHA-256: 364bcf32c7af2525ecaaddc9e82d925c3fa414d6cbfeffaec8365a64be3003b1
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document is identified as malicious by ML classifiers and ClamAV, exhibiting characteristics of a phishing lure. It contains embedded JavaScript and a link farm pointing to numerous compromised websites, likely intended to redirect the user to a malicious site for credential harvesting or further exploitation. The document's structure and heuristics strongly suggest it's designed to trick users into clicking through to a harmful destination.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9927

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 76 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://allytemp.ru/uplcv?utm_term=five+fold+ministry+training+manual PDF link annotation
    • http://www.corazondelsol.es/ckfinder/userfiles/files/13995281270.pdfIn PDF document text
    • http://ontheedgeofnow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ee6ce78cc9---7129485474.pdfIn PDF document text
    • http://www.truca-taoules.com//ckfinder/userfiles/files/pozufaselavorutadunufaseb.pdfIn PDF document text
    • http://slowjamsundays.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d84bba7f822---96617228394.pdfIn PDF document text
    • https://juhaszautovill.hu/userfiles/file/43587028939.pdfIn PDF document text
    • https://nam.it/wp-content/plugins/formcraft/file-upload/server/content/files/160ca9e4e127eb---65029301569.pdfIn PDF document text
    • https://habibitours.com/ckfinder/userfiles/files/bofinomonijonarivez.pdfIn PDF document text
    • http://www.carolglassman.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a60f4953f88---xulefidamexoko.pdfIn PDF document text
    • http://rallyteamwalraven.nl/file/39950864587.pdfIn PDF document text
    • https://implantsdentairesdesmoulins.com/upload/editor/file/81391139264.pdfIn PDF document text
    • https://terminal.hr/userfiles/file/15215549282.pdfIn PDF document text
    • http://www.neslihanonur.com/wp-content/plugins/super-forms/uploads/php/files/c9552c3855d0538a9732b62ca1e042f5/xeziruwivosuwatogujesu.pdfIn PDF document text
    • https://whiteplacard.com/UserFiles/file/39985204808.pdfIn PDF document text
    • http://sun-marche.com/app/webroot/js/ckfinder/userfiles/files/18386275703.pdfIn PDF document text
    • http://www.recetasyconsejos.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073d231ddb18---87731775394.pdfIn PDF document text
    • https://www.adom.biz.pl/ckfinder/userfiles/files/vogugesogetoko.pdfIn PDF document text
    • http://thaihotelsale.com/FileData/ckfinder/files/20210619_1D72C6A264939705.pdfIn PDF document text
    • https://ecef-groupe.com/wp-content/plugins/super-forms/uploads/php/files/grph5m995h34spn424qtac0rn0/gegivas.pdfIn PDF document text
    • https://xn----9sbccjdbca7cyaieg1a3j.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/feca43835978a99e630eb529e0c5e96f/bugitusofasavagewa.pdfIn PDF document text
    • http://ophtalmic-overnight.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1610c50f6522a0---gazalonu.pdfIn PDF document text
    • http://www.1atlanticfunding.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a1e0d15852a---59000624481.pdfIn PDF document text
    • https://acornschoolcharleston.org/wp-content/plugins/super-forms/uploads/php/files/c07b2e76a84891bf0a507212b658d966/fusorekodimimaxefakemaf.pdfIn PDF document text
    • http://www.movingintofreedom.com/wp-content/plugins/formcraft/file-upload/server/content/files/16096a5fbaa8e0---mobumuxobuvevugasidexa.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off0000b0d6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0xB0D6 18504 bytes
SHA-256: e8bd5ae8dfa42d5d2b576e91fc6311e2c3edfa7a2da57c0aa477e8cc9db8ff00
font_01_sfnt_off0000ce80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE80 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000e697.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE697 10952 bytes
SHA-256: fad677cc7cdd6ad894c81452b76c18e3e0d04a252378cd39b03caf3a37d6f2b3
font_03_sfnt_off0000ffcc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFCC 13956 bytes
SHA-256: 10c84cb97d6d714626f028edc47095e14587a1004949c11e7c25fe573eb69ac0

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