Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9601eb8ce3f1667…

MALICIOUS

PDF

74.7 KB Created: 2021-02-24 08:16:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 18d840baa46a3a9d2de7c06255cd34cd SHA-1: aae468d3dfb41133e883418abe0ebaf6c1fb670c SHA-256: e9601eb8ce3f1667c91eccbd0a3bfdf02ada810e40bd9ab9567aa66f0c9cb8c6
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, with one pointing to 'maypoin.ru' which is associated with a search query for a game hack. This suggests a phishing or malware distribution lure. ClamAV and ML classifiers also flagged the PDF as malicious, indicating a high likelihood of malicious intent. No scripts were extracted, but the presence of many external links, including a link farm, points towards an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 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.
  • 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=geometry+dash+apk+2.0+hack PDF link annotation
    • https://cdn.sqhk.co/numokafas/dIRPEie/nintendo_switch_online_costo.pdfIn PDF document text
    • https://cdn.sqhk.co/bejadelu/jtdjdGT/vidiza.pdfIn PDF document text
    • https://xedutogozazinar.weebly.com/uploads/1/3/4/5/134505586/woxofagare.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403684/normal_5fe19c09c0dcc.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/povelenavuviw/80159679727.pdfIn PDF document text
    • https://s3.amazonaws.com/divikufifir/86683041015.pdfIn PDF document text
    • https://s3.amazonaws.com/guxosa/36107750359.pdfIn PDF document text
    • https://s3.amazonaws.com/pafiganovavi/1514097183.pdfIn PDF document text
    • https://s3.amazonaws.com/mokamoba/simile_and_metaphor_worksheet_grade_4.pdfIn PDF document text
    • https://s3.amazonaws.com/vebogotexaf/zaxenonuvemawomaripavu.pdfIn PDF document text
    • https://s3.amazonaws.com/rodigapigeta/68021296366.pdfIn PDF document text
    • https://s3.amazonaws.com/wezukep/fadiwitanarujamosubule.pdfIn PDF document text
    • https://s3.amazonaws.com/sorapobuk/best_political_reads.pdfIn PDF document text
    • https://s3.amazonaws.com/kuboki/31091079316.pdfIn PDF document text
    • https://s3.amazonaws.com/vixuwogetiv/83405958072.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_off0000e6d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6D0 5784 bytes
SHA-256: 79bd655367581afdddff2535cfd91139a81b723e609214fba2f4acf91c3f7cb0
font_01_sfnt_off0000fa67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA67 10500 bytes
SHA-256: 84395cb83532842e82d66b46a2460e3a3c6d5282d9c98abc17df7bd14b3162d0

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