Malicious PDF — malware analysis report

Static analysis result for SHA-256 e01559845e047b36…

MALICIOUS

PDF

104.3 KB Created: 2021-07-22 06:17:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 016cb5a574d9e2645cbc18b1cbde852f SHA-1: 07acd7d30702a93342d5ef798fcc3e8dad3f6b2d SHA-256: e01559845e047b361064bce545739908c35f31440e404a456ec1def28e26f0e7
176 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The document contains a link farm pointing to compromised WordPress upload storage, suggesting it's used to distribute further malicious content or phish users. The presence of multiple PDF links and the callback lure heuristic indicate a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://amagi.la/wp-content/plugins/formcraft/file-upload/server/content/files/16099af74081ae---sewafugogovugekevupajoju.pdf
    • http://debschoen.com/userfiles/file/66228590445.pdf
    • http://1960vonsteuben.com/clients/d/df/dfb5e1b83ea85bfdc5ef1da934264264/File/36156203792.pdf
    • http://oryginalnedekoracje.pl/userfiles/file/59138898215.pdf
    • https://digireg.it/upload/gatidewesogatenutosadif.pdf
    • http://e68momo.com/shopadmin/upload/files/70086820649.pdf
    • http://archiprojektai.lt/app/webroot/uploads/userfiles/files/kipeboxepegokaxoxeduv.pdf
    • https://hps-gruppe.com/wp-content/plugins/super-forms/uploads/php/files/gbmepvape9ddmr7tpqckb9dp4c/menudezenusedasi.pdf
    • http://kulturazebrak.cz/userfiles/kabapinaw.pdf
    • http://elonsummerstorage.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bf6c3185ee3---17147796748.pdf
    • http://www.qookspot.kitchen/wp-content/plugins/formcraft/file-upload/server/content/files/160af7e5b2be5a---22848324104.pdf
    • http://atdawnwelift.com/userfiles/file/gizeposimusesux.pdf
    • http://cnhhgj.com/upfiles/userfiles/file/77493549958.pdf
    • http://grabnerestriche.at/93255117888.pdf
    • http://verkaufs-akademie.com/userfiles/file/xojajesi.pdf
    • http://danchrisjewelry.com/userfiles/file/91855296790.pdf
    • https://muratay.nl/userfiles/file/13600752732.pdf
    • https://118highschool.am/wp-content/plugins/super-forms/uploads/php/files/ba3cc120636ad0a108017014658b979e/41263876189.pdf
    • http://myucpb.net/userfiles/file/50490659077.pdf
    • http://heureka-cz.eu/files/13767690415.pdf
    • http://sanarina-coaching.de/ckfinder/userfiles/files/7343201845.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/6naE_Nh8_CY/uplcv?utm_term=deadly+conduct+discharge+firearm
    • https://bxthirteen.wpengine.com/wp-content/plugins/super-forms/uploads/php/files/c250c83983955526629049c0be4dc666/17240307363.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001367d.bin
d5632412efb96005101dc5b38202d01e4e94f8da64910fde27215caa93764397
pdf-font-stream PDF embedded font (sfnt) at offset 0x1367D 11140 bytes
font_01_sfnt_off00015018.bin
dbbfe8dfd2402c4d67ae28df5decf533ac229d77cb0ac7bcfecaec00b8a2303f
pdf-font-stream PDF embedded font (sfnt) at offset 0x15018 16684 bytes
font_02_sfnt_off00017b52.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x17B52 16792 bytes