Malicious PDF — malware analysis report

Static analysis result for SHA-256 967f8886dcf57464…

MALICIOUS

PDF

69.4 KB Created: 2021-02-14 07:00:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: df7ed5bbc758f0b0720731299958f3c5 SHA-1: 3791358d4736de399940a57b3c1faaa16e64e88d SHA-256: 967f8886dcf57464256f145b5ba641ea24414e064e70f70af7056fc4767faa73
134 Risk Score

Malware Insights

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

The PDF contains multiple external URLs, including one that appears to be a lure for a 'Netflix app for iPad'. The heuristic findings indicate this PDF is part of a link farm on disposable hosting, and ClamAV detected it as a phishing trojan. The presence of numerous URLs and the link farm behavior strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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 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://baarspo.ru/aws?utm_term=netflix+app++for+ipad PDF link annotation
    • https://lilalosemojuwo.weebly.com/uploads/1/3/0/8/130814601/zurigexixeveturupubi.pdfIn PDF document text
    • http://armada.technology/53734713132btsn2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379984/normal_5fd61d255e71d.pdfIn PDF document text
    • https://rofunepez.weebly.com/uploads/1/3/2/7/132710772/e657399.pdfIn PDF document text
    • https://cdn.sqhk.co/tivinarafuvu/AEndjjx/cartoon_anime_color_by_number_app.pdfIn PDF document text
    • https://cdn.sqhk.co/gozawelesutu/hShckXs/sim_dashboard_pc_free_download.pdfIn PDF document text
    • http://megantv.site/el_principito8ky3m.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414869/normal_5fd6c2f5ae562.pdfIn PDF document text
    • http://my-favshopd.online/fopelivosotabf5cu9.pdfIn PDF document text
    • http://visionnew.xyz/fukulixakebulunonofc3.pdfIn PDF document text
    • https://woxazalaxit.weebly.com/uploads/1/3/4/2/134235403/mixomikebixo.pdfIn PDF document text
    • https://cdn.sqhk.co/xuwifoviwalo/Ijbhhjg/99811414864.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000d4fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4FB 4892 bytes
SHA-256: 055f124cb15bf9e644e09d860c988f45fda4582fd6f0b247eb673d973437565a
font_01_sfnt_off0000e5be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5BE 10404 bytes
SHA-256: 9613404fbcb59f98d5e9ab31f4d43f09ab5b29506ddd0e9f0fe8d08ff7410895

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