Malicious PDF — malware analysis report

Static analysis result for SHA-256 078b10cb625e7c49…

MALICIOUS

PDF

83.8 KB Created: 2021-03-31 13:16:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 9fee0d1eb24e8d5b5d03aee7b81236e0 SHA-1: 11db7c2d6ba1c408a9d9573e97d417292e6d041f SHA-256: 078b10cb625e7c492ec7ffaedc4bd1b8a068e5c5fd9aed38dfe8e2ea0a62b191
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://leonvi.ru/strik?utm_term=weber+grill+parts+by+model+number PDF link annotation
    • https://feminudusur.weebly.com/uploads/1/3/1/4/131407357/sopupenutipew.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369185/normal_5ff5eb6ed586c.pdfIn PDF document text
    • https://kabuvegezukab.weebly.com/uploads/1/3/5/3/135325093/6190637.pdfIn PDF document text
    • https://xiligori.weebly.com/uploads/1/3/1/4/131411896/773b298f965b.pdfIn PDF document text
    • https://jejepijukutu.weebly.com/uploads/1/3/4/1/134131362/2365458.pdfIn PDF document text
    • https://rasetakewalufil.weebly.com/uploads/1/3/6/0/136086978/vabexijurab.pdfIn PDF document text
    • https://fozaronu.weebly.com/uploads/1/3/5/3/135349809/jenavegeres-xipilotivitef-xigidi.pdfIn PDF document text
    • https://medizagokitoni.weebly.com/uploads/1/3/2/3/132303310/2faabe3.pdfIn PDF document text
    • https://koneligave.weebly.com/uploads/1/3/4/5/134581264/rowetolufoka-boxazurawinek.pdfIn PDF document text
    • https://xizidedatisaxos.weebly.com/uploads/1/3/2/3/132303240/detilinupivus.pdfIn PDF document text
    • https://dezilitew.weebly.com/uploads/1/3/4/7/134728488/vatuxupepilifumame.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460694/normal_605eebcfe66dd.pdfIn PDF document text
    • https://rirosivipoxutu.weebly.com/uploads/1/3/2/3/132302830/fawadovig.pdfIn PDF document text
    • https://runogobikekeg.weebly.com/uploads/1/3/5/3/135350887/e77e62ec98092.pdfIn PDF document text
    • https://cdn.sqhk.co/gulifunanale/ieMgghh/solar_system_easy_drawing.pdfIn PDF document text
    • https://nefotinabe.weebly.com/uploads/1/3/5/3/135314884/946210.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490720/normal_601a108ff4187.pdfIn PDF document text
    • https://cdn.sqhk.co/bozutebux/2hhIrgg/thrift_stores_near_me_open_now.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/vizegemawokaxe/fexonipuninavopakuren.pdfIn PDF document text
    • https://s3.amazonaws.com/belapawerezuju/gdevelop_5_templates.pdfIn PDF document text
    • https://s3.amazonaws.com/dufekifaral/37595421330.pdfIn PDF document text
    • https://s3.amazonaws.com/tonisefoteka/44105420268.pdfIn PDF document text
    • https://s3.amazonaws.com/lakadutof/mapamundi_poltico.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_off000109ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109EE 5536 bytes
SHA-256: da59f9b35dcaf6845457d8cafd67ba8bf81a2997d194b8fec5a91288979100bd
font_01_sfnt_off00011cb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CB6 10868 bytes
SHA-256: 3b38e496c11da532c59c955f4f943b538173942619a0b1600c64e47c462aeea8

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