Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0eab3ab10099358…

MALICIOUS

PDF

116.0 KB Created: 2021-05-30 19:19:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: bc6b156fcd31b9b9aba74614f4665994 SHA-1: ddcdccd2dab900038c2fca27da81fe991348b781 SHA-256: d0eab3ab10099358a51682cea3b7cabf583006f16e90a08e8e61a37b5f33ef18
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 0.9998

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://jumiwimov.ru/strik?utm_term=dvd+writer+model+ts-h653+price PDF link annotation
    • https://xinorexuvon.weebly.com/uploads/1/3/4/6/134608307/tesozowuxuba.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4457318/normal_5fc69db420a93.pdfIn PDF document text
    • https://jawavovamote.weebly.com/uploads/1/3/4/7/134748122/35c39.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378599/normal_60407dc8cf42f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408475/normal_5ff58bd7842f9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4457008/normal_60025206b4983.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381098/normal_5ff8ee4700fe7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421042/normal_6050d37c34ca8.pdfIn PDF document text
    • https://tupirusu.weebly.com/uploads/1/3/4/7/134702138/760326.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486552/normal_604cfcc10fda6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372382/normal_603c73f5965d2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459916/normal_602ed0f07ceac.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393641/normal_60554da0daa56.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404980/normal_5fe8fe3f5bf0f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367005/normal_602718a385036.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4463808/normal_60b28f6968c5c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451033/normal_5ff4e05b3fb23.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/5772e4fd-bf55-4b26-a275-13c87d9f552b/82956212618.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/48a72428-40a2-4aae-967a-8af81c0f6748/8.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_off00018454.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18454 5728 bytes
SHA-256: e33db0ce40d2bfec1901ae54e22521e55b1713865e490fe6c4c342fc328632b0
font_01_sfnt_off000197cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x197CB 12560 bytes
SHA-256: 531af1ef73d1329ec3c205911b39228ca6889010cc6fcd4eb771a08f361b2b33

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