Malicious PDF — malware analysis report

Static analysis result for SHA-256 be1c203962e1c23d…

MALICIOUS

PDF

42.6 KB Created: 2020-11-03 13:16:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e1fbf38f24cc121628198f4422d1244a SHA-1: da62419a16d9b9a55a1a5c7704da0f3983f1b6f5 SHA-256: be1c203962e1c23d30d6e3812da264111b01580d9f34a1d01434ffb140e2ac5a
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, with one pointing to a known malicious redirector. The document body and heuristics indicate a lure for male enhancement products, suggesting a scam or phishing attempt. The presence of a link farm and a malicious redirector strongly suggests an attempt to lead users to malicious websites.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://ggtraff.ru/aws?keyword=staminon+male+enhancement
    • https://gewaxuselez.weebly.com/uploads/1/3/4/2/134265722/notufasek.pdf
    • https://jubunukaf.weebly.com/uploads/1/3/1/4/131483214/1867047.pdf
    • https://dovasuseburipir.weebly.com/uploads/1/3/4/3/134394860/c500b.pdf
    • https://cdn-cms.f-static.net/uploads/4386361/normal_5f8e694e90f06.pdf
    • https://turomanusogagi.weebly.com/uploads/1/3/1/4/131453559/61f82309.pdf
    • https://wuwenivavubujer.weebly.com/uploads/1/3/1/4/131437756/kulazukebewo.pdf
    • https://kotidirexi.weebly.com/uploads/1/3/4/3/134358756/6716733.pdf
    • https://sawajarenemobo.weebly.com/uploads/1/3/4/4/134494328/21fd268c29eb1.pdf
    • https://cdn-cms.f-static.net/uploads/4420036/normal_5fa1226400982.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/zufaxepixiguxax/html_symbol_list.pdf
    • https://uploads.strikinglycdn.com/files/3215a1bc-d85c-4a90-9ac6-ef00de3d958c/ponexebogopogig.pdf
    • https://s3.amazonaws.com/lefemijip/53721241386.pdf
    • https://s3.amazonaws.com/datarofapakil/florida_championship_wrestling.pdf
    • https://s3.amazonaws.com/jasadavebaga/41536472250.pdf
    • https://s3.amazonaws.com/xisefowu/gozutenefukekiba.pdf
    • https://s3.amazonaws.com/wuniku/impulse_control_activities.pdf
    • https://s3.amazonaws.com/zuxime/25935315481.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://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006a27.bin
602d2871e2be6747d029204deee595147fd95441dfd58ee903225ccf7d619893
pdf-font-stream PDF embedded font (sfnt) at offset 0x6A27 4868 bytes
font_01_sfnt_off00007a8d.bin
2c69bda0109f448ffa8d243b15b21dbafd30a68ac3c9d7b1f1799974d2fd0867
pdf-font-stream PDF embedded font (sfnt) at offset 0x7A8D 10304 bytes