Malicious PDF — malware analysis report

Static analysis result for SHA-256 8077a8cd4503dcfb…

MALICIOUS

PDF

112.4 KB Created: 2021-06-14 02:24:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 55a739869533f204037a8745dbe97e04 SHA-1: edc581ad5a739c19978a5bea93b5757a45ae77d9 SHA-256: 8077a8cd4503dcfb1d408893088e5ff287c6e00099f8c5d1f4c6d4b18daa4e00
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document exhibits characteristics of a phishing lure, indicated by the presence of a download button and numerous links to compromised websites. The ML classifier and ClamAV detection strongly suggest malicious intent, likely to trick users into downloading a secondary payload. The document's content and structure point towards a phishing attack, possibly disguised as a software download.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://garglob.ru/uplcv?utm_term=mini+militia+old+version+iphone PDF link annotation
    • http://www.supercarrentalsofmiami.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078ee3852977---pajezurega.pdfIn PDF document text
    • https://christembassybarking.org/wp-content/plugins/super-forms/uploads/php/files/0acf13c7f4210250cd497184e081e9e4/sovezosakupalunaxenexu.pdfIn PDF document text
    • https://midasspa.com/ckfinder/userfiles/files/bopigimati.pdfIn PDF document text
    • https://pima-alarms.net/slicice/file/50232863533.pdfIn PDF document text
    • https://archltginc.com/wp-content/plugins/super-forms/uploads/php/files/e649b51f489f015b0c7c4689f447a079/boxejijisenemoxukilomud.pdfIn PDF document text
    • http://thm-holding.ru/wp-content/plugins/super-forms/uploads/php/files/88757630ba7888061b28b8d1fa01bf08/lanisalevegezimebakuxip.pdfIn PDF document text
    • http://sad-azov.ru/wp-content/plugins/super-forms/uploads/php/files/5b366b160d0467298cee1dc1342850e6/72192498279.pdfIn PDF document text
    • https://eucolait.eu/userfiles/files/bivavikorasitudojezegu.pdfIn PDF document text
    • https://postscriptproductions.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bba8538dc0f---zasejovozenote.pdfIn PDF document text
    • http://www.atrium-tuiles.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075de9c2b652---1811121304.pdfIn PDF document text
    • https://weblative.com/wp-content/plugins/super-forms/uploads/php/files/0igds1432cstpf9v0tanjudfed/4446687800.pdfIn PDF document text
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070fdcbf3bce---18933406073.pdfIn PDF document text
    • https://cowichanseniors.ca/userfiles/file/wagemik.pdfIn PDF document text
    • http://aksaaydinlatma.com/img/editor/image/file/85377963707.pdfIn PDF document text
    • http://filatelianumismaticaumbra.it/userfiles/file/97480447038.pdfIn PDF document text
    • https://a2designbg.com/userfiles/file/33430715705.pdfIn PDF document text
    • https://www.dolphinrfid.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609bafb244c5f---tukabukage.pdfIn PDF document text
    • https://aguiapromocional.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16089b3c972966---komirusazomus.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.fontrix.comhttp://www.nhncorp.comIn 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://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000141f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x141F1 5264 bytes
SHA-256: 16271966c88752bf0f686e4b76932dea3da7df5550395b302cdd958a54207349
font_01_sfnt_off000153b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x153B0 3872 bytes
SHA-256: b342642bca3412f0d9a04a1f833c0ec468c5266f5bf6977f11dc3b7f47d76cc1
font_02_sfnt_off000162d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x162D6 11008 bytes
SHA-256: f0a3eb76df1497d61d0f03137284757b8c1f78dcd1395d9bc4413cfca2d774a5
font_03_sfnt_off0001884f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1884F 20440 bytes
SHA-256: 66dd066863445fe20af05e8aefc59f97d05e4543db5e4c924ea9fe704c6cd10e
font_04_sfnt_off0001a972.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A972 2400 bytes
SHA-256: 34ea927d26e9ca3ac8041f20be0aae7ce5f0e1c3faa1a68711a631b0b2d54101

Open this report in the interactive analyzer, or submit your own file for analysis.