Malicious PDF — malware analysis report

Static analysis result for SHA-256 126a2a417014055e…

MALICIOUS

PDF

83.3 KB Created: 2021-03-05 10:45:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: f3c00f3e5d1bff7f19f8a42962e67545 SHA-1: 631231276ccd654351d98752d85fd1bf4b202c54 SHA-256: 126a2a417014055ead5e266dcac21375d0aebe94e5f9e994b250b252601ec78a
196 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious File T1059.007 JavaScript

The PDF contains a large number of external links, many of which are to PDF files hosted on various platforms, suggesting a link farm or SEO poisoning attempt. One of the external links, https://ponafet.ru/strik?utm_term=how+much+is+a+tracfone+at+walmart, is directly related to the document's apparent lure. The heuristic 'SE_REMOTE_SUPPORT_LURE' indicates the document likely instructs the user to install or connect with a remote support tool, which is a common tactic for phishing or social engineering attacks.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 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.
  • Remote-support tool lure high SE_REMOTE_SUPPORT_LURE
    Document instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
  • 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/strik?utm_term=how+much+is+a+tracfone+at+walmart PDF link annotation
    • https://lodokevez.weebly.com/uploads/1/3/4/4/134476034/posero.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371020/normal_603a2d35b05bd.pdfIn PDF document text
    • https://pitalozel.weebly.com/uploads/1/3/1/3/131384414/89650.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408172/normal_600c354904e12.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452588/normal_603d079e92df1.pdfIn PDF document text
    • https://likomajuf.weebly.com/uploads/1/3/5/3/135321460/nezexubukodukupu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4443799/normal_5ff454b22f3fc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457570/normal_603ea34895569.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454051/normal_603705256a31b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483365/normal_5ff781fa38d23.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380523/normal_5fd9b0b32d34e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478393/normal_6031c892cc1a9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382952/normal_5fe927da89342.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390663/normal_6041e4157a17b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/zozuxukoxo/59439853730.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3a865124-92b1-44d9-bb33-5d8bca8d2f44/vmware_horizon_client_install_failed_1603.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/efdd9f08-cded-4d26-bec6-134795c1f3e7/where_to_get_a_bose_wave_radio_repair.pdfIn PDF document text
    • https://s3.amazonaws.com/kisimujuk/friday_night_football_tv_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/xepululejiwof/larogiwodabomupew.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000faa5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAA5 5056 bytes
SHA-256: 45472b2a89a6dc7ae93c2b188a6695a60da0dd83be810b425437d3d619a81a13
font_01_sfnt_off00010bb8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BB8 11192 bytes
SHA-256: acd85e76330aaedc6bd46e7eb8aeb5f7bbad94f4d70b700651d93ea147da9eb5
font_02_sfnt_off000131c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x131C2 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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