Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe5707b0329d2088…

MALICIOUS

PDF

67.4 KB Created: 2020-12-21 04:08:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 512691eee32076434819ad83250c0f85 SHA-1: 2e2abecb25aff8342cb079b9cf8861e65a9c35bd SHA-256: fe5707b0329d20886aacab60d046cae64b14dcdbab5afa8d38e8274e8a99cf47
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains a large number of external links, many pointing to Weebly-hosted PDFs, suggesting a link farm or redirection mechanism for phishing or malware distribution. The embedded URL `https://trafffe.ru/strik?utm_term=mediaf%253F+re+minecraft+bedrock+edition+pc` is a primary indicator of the malicious destination.

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://trafffe.ru/strik?utm_term=mediaf%253F+re+minecraft+bedrock+edition+pc PDF link annotation
    • https://libuxave.weebly.com/uploads/1/3/4/4/134438459/mulavudavapaku.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373522/normal_5fd93c4b461f6.pdfIn PDF document text
    • https://matazesugol.weebly.com/uploads/1/3/4/7/134702103/xopup_putesom_davilela.pdfIn PDF document text
    • https://razixolinatu.weebly.com/uploads/1/3/4/3/134384461/44355444dee15.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369935/normal_5fd164289cf24.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372735/normal_5f8ec4556d707.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/73d6ae25-4210-4142-af5f-0497491b508f/kizafefojig.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/258a193f-fc16-4494-970d-53319b773173/desktop_wallpaper_hd_animated_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4b9aa40c-b3f7-4f58-bd63-6a3445bb6d39/12418775484.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fdd2b2255b18a2b82c09c96/t/5fde3169ef735726d252f52e/1608397162976/tevixoginokizi.pdfIn PDF document text
    • https://s3.amazonaws.com/fulazelof/pullin_me_back_chingy.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8ebf1d72-2094-4368-a4e9-b42984f08ceb/a_coney_island_of_the_mind.pdfIn PDF document text
    • https://s3.amazonaws.com/ganubifirigevi/english_catholic_mass_songs_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/20a21705-d32d-47d8-92e6-8de649e34487/27657331947.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_off0000c9b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9B9 5444 bytes
SHA-256: dc4918a42b9feb88c18b83952dfc6355fd65069f1e772308383abd8cb939e73f
font_01_sfnt_off0000dc33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC33 10728 bytes
SHA-256: 146c8cf767b3c2397b02e96a3743c28068b0d56da31ae3b4a2066f2e79d9881e

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