Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ef293252a293919…

MALICIOUS

PDF

152.5 KB Created: 2021-08-11 14:08:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 35a3952b74b6f8288a8bef444f0972b1 SHA-1: 95a13fe13586fe0be9f49bcea794f7dd9cf42835 SHA-256: 0ef293252a293919d766076543966a53e905c7b614b66ef817ba32628738362d
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document exhibits characteristics of a phishing lure, specifically a payment redirection scam, as indicated by the 'SE_PAYMENT_REDIRECT_LURE' heuristic. It contains numerous embedded URLs, many pointing to compromised WordPress sites, suggesting an attempt to distribute malicious content or redirect users to phishing pages. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the presence of multiple external URIs and the nature of the heuristics strongly suggest a phishing attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9954

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • 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.
  • 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://archism.ru/uplcv?utm_term=ice+age+adventure+cheat+engine+hack+berrybox PDF link annotation
    • http://comicpapyrus.com/wp-content/plugins/super-forms/uploads/php/files/361636cd60733ba87064d4adc7503269/87265984593.pdfIn PDF document text
    • https://stauber.lt/images/files/tufupipe.pdfIn PDF document text
    • https://unosms.us/userfiles/file/vekijepivaviget.pdfIn PDF document text
    • https://edmaker.site/wp-content/plugins/super-forms/uploads/php/files/2b66155af49e76f0e236435d1654a338/67877873782.pdfIn PDF document text
    • http://villa-carlshorst.de/sites/default/files/file/38896048525.pdfIn PDF document text
    • http://vuatoyen.com/uploads/userfiles/file/madezigixidofusul.pdfIn PDF document text
    • http://gdaniec.com/upload/files/80724883622.pdfIn PDF document text
    • https://iword.de/userfiles/file/26795946294.pdfIn PDF document text
    • https://idfusionllc.com/wp-content/plugins/super-forms/uploads/php/files/fbac5b9eb61358c62d74ea3ad9c8eea7/vifutofesuxegovuxezaloras.pdfIn PDF document text
    • https://tuabogadoangel.com/wp-content/plugins/super-forms/uploads/php/files/9a39b992357462adcf6b40c018dd2bea/nefilakudepodarubijugifi.pdfIn PDF document text
    • https://www.hungarianassociation.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a7e62d0996c---9027341990.pdfIn PDF document text
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/161136a37b1098---tipukunuferizudupenowot.pdfIn PDF document text
    • http://truhlarstvisollner.cz/data/file/libexibuvegefotur.pdfIn PDF document text
    • http://alexlunacoach.com/img/editor/file/tadax.pdfIn PDF document text
    • http://boxethai38.com/upload/file/nebaz.pdfIn PDF document text
    • https://cdmsig1.com/ckfinder/userfiles/files/64287445555.pdfIn PDF document text
    • https://christembassybarking.org/wp-content/plugins/super-forms/uploads/php/files/d5109fb7c6f7fe68a4e53fa6e9fd8f9b/jaxebunolirogukedemujovu.pdfIn PDF document text
    • https://action-roofing.com/wp-content/plugins/super-forms/uploads/php/files/1968c8f99f92721dec2cf501b9cebbee/19431431226.pdfIn PDF document text
    • http://www.mediagrand.hu//data/editorfile/55985272538.pdfIn PDF document text
    • http://inspirationallabels.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1608c39ffb73d9---5633515099.pdfIn PDF document text
    • http://bayzones.com/fckeditor/editor/filemanager/connectors/php/userfiles/file/69818744561.pdfIn PDF document text
    • http://nandeestationery.com/userfiles/files/zidaluxejisowarujur.pdfIn PDF document text
    • http://xn--80aamdqpfpr.xn--p1ai/upload_picture/77907926072.pdfIn PDF document text
    • http://www.christinemartin.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1607cdb29426b3---31717055092.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001f3ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1F3EC 17472 bytes
SHA-256: 46da7621b40cd9e5126703ddf770f27a9ab2fd271a7350886751016644bb0f90
font_01_sfnt_off000221c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x221C7 11000 bytes
SHA-256: 33de130b40a9922596731ac24adee540f155855472d9b6c92f7f63df0c0bfcf8
font_02_sfnt_off00023b1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x23B1A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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