Malicious PDF — malware analysis report

Static analysis result for SHA-256 2607e6d4b411d5f8…

MALICIOUS

PDF

82.9 KB Created: 2021-03-25 09:13:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 4b5135a97b5c9938b356c9d461e342ea SHA-1: 13aa249403287aaba1ed68de2087ca44de150b70 SHA-256: 2607e6d4b411d5f8f46774a04da805593755f9b133bf12c932a292f80b40aa2e
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded URLs, with one prominent URL pointing to a suspicious domain ('ponafet.ru') that is likely part of a phishing or malware distribution scheme. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' further indicates a malicious intent to use link farms for obfuscation or redirection. The ML classifier and ClamAV detection strongly suggest malicious content, likely related to phishing or trojan distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9970

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://ponafet.ru/wix?keyword=salt+nayyirah+waheed+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4405950/normal_603dc921f23e6.pdfIn PDF document text
    • https://cdn.sqhk.co/bujasugawo/40pjgVV/zugezamugifusax.pdfIn PDF document text
    • https://cdn.sqhk.co/gobuwovuv/jTjhhe2/disorderly_conduct_charge_in_arizona.pdfIn PDF document text
    • https://cdn.sqhk.co/sunidoxil/NMge1oQ/yahoo_messenger_old_version_free.pdfIn PDF document text
    • http://tojuvapemupo.mywebcommunity.org/96130084120.pdfIn PDF document text
    • http://zofunubesosena.mypressonline.com/82384334732.pdfIn PDF document text
    • https://cdn.sqhk.co/bexutavukaro/gchjidj/grand_formula_racing_2019_mod_apk_unlimited_money.pdfIn PDF document text
    • https://cdn.sqhk.co/puxedimuwo/bohfMif/vigapizibixazovodezi.pdfIn PDF document text
    • http://pedugubugof.mywebcommunity.org/19384956107.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449419/normal_600e6d136c63f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494868/normal_5fe64de52212e.pdfIn PDF document text
    • https://cdn.sqhk.co/zudilubal/hd3cdhf/68157338215.pdfIn PDF document text
    • https://cdn.sqhk.co/tudusiki/SygijcU/77400433042.pdfIn PDF document text
    • https://cdn.sqhk.co/pemejurove/yhiGsLX/live_cricket_match_tv_apk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484812/normal_6029e152e4dfe.pdfIn PDF document text
    • http://purubifo.medianewsonline.com/how_to_pair_tp_link_extender_with_router.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450337/normal_5feb4312b5948.pdfIn PDF document text
    • https://cdn.sqhk.co/vipotukivisi/jhgfgjc/tapilexamajeve.pdfIn PDF document text
    • https://cdn.sqhk.co/waxigapo/h3PSDif/97694542457.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dipulitexaxuz.epizy.com/tozeguluxekanadonitodode.pdfIn PDF document text
    • http://pixafur.atwebpages.com/pumerabirova.pdfIn PDF document text
    • http://duxegejuw.atwebpages.com/98967188577.pdfIn PDF document text
    • http://tosabukevosubar.myartsonline.com/best_business_plan_format.pdfIn PDF document text
    • http://mesobeku.epizy.com/diwalejolur.pdfIn PDF document text
    • http://jagojogux.rf.gd/33923155357.pdfIn PDF document text
    • http://jadupapobixe.epizy.com/adobe_photoshop_latest_version_free_pc.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010653.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10653 5248 bytes
SHA-256: 9a35be06a4ee247614e85358957dcfc56ea2d1814ae359d9e4755e637f3e4049
font_01_sfnt_off0001183e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1183E 11048 bytes
SHA-256: 300b163fdd5107d5a4a0b977917c218311a9b524d702646332c521eb7f960ce8

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