Malicious PDF — malware analysis report

Static analysis result for SHA-256 16e4140380f9a802…

MALICIOUS

PDF

66.8 KB Created: 2021-02-24 04:33:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: cd595c3c588b5f2da586df7e3c655f94 SHA-1: 02f011b1383e8ced0e5ec5d37404aeb40d7bf992 SHA-256: 16e4140380f9a80298efcaec80d9838d7cf427a97398670cfad75473c14527db
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://maypoin.ru/wix?keyword=apk+pokemon+free+download+whatsapp PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4406782/normal_6033b16d63f21.pdfIn PDF document text
    • https://cdn.sqhk.co/runudori/gTjecjf/28235936132.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407070/normal_60135a2846a58.pdfIn PDF document text
    • http://qiwi-wallet.online/javascript_quick_reference_guide29lgz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426279/normal_6033f7a3c5e05.pdfIn PDF document text
    • http://llloooodddd.space/fozibakibavufuzanunalphr94.pdfIn PDF document text
    • https://bemetezebore.weebly.com/uploads/1/3/4/8/134882820/gabuxuxadipa-rusuxojudefaful-taxez-rupopuv.pdfIn PDF document text
    • https://xemexetizepe.weebly.com/uploads/1/3/6/0/136094173/4870535.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445745/normal_600ff09ce29a9.pdfIn PDF document text
    • https://ginegumogigoxi.weebly.com/uploads/1/3/2/8/132816185/4015839.pdfIn PDF document text
    • https://soguleta.weebly.com/uploads/1/3/4/3/134305846/6071801.pdfIn PDF document text
    • http://the-job.ru/psychic_intelligence_free_downloadkysk5.pdfIn PDF document text
    • http://peludofnor.fun/why_did_the_alliances_cause_ww16o1eb.pdfIn PDF document text
    • http://sodobinefudiguw.iblogger.org/bepavowipixerujufavefa.pdfIn PDF document text
    • https://dumisoxi.weebly.com/uploads/1/3/4/6/134625223/waxebudu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://texuxirim.epizy.com/zogikibarexejorekutuvadu.pdfIn PDF document text
    • http://lusafawapinoxe.rf.gd/salixitezotixobujilokusu.pdfIn PDF document text
    • http://fapisab.rf.gd/71367411173.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_off0000c736.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC736 5424 bytes
SHA-256: f45eb5fe78868a0447967c2f3876f5267e141da04cbc3ba37750729ef055c3c7
font_01_sfnt_off0000d992.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD992 10660 bytes
SHA-256: ad7caad52bab3faa105421217bd90b9ca058d1eb1d07d34aaed3f157ebec6389