Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e7c1d8027279e04…

MALICIOUS

PDF

76.1 KB Created: 2020-11-14 04:08:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 00b02dd5d780bd72216107319fc2e468 SHA-1: de04414759b832627a7293bea7bab9b03ce49f36 SHA-256: 1e7c1d8027279e0459974c2f2fc5358b468a512c382f640785d131921f10604e
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 0.9997

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://traffine.ru/strik?utm_term=imodgame+android+apk PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4381347/normal_5fa2a2e290868.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387715/normal_5f99c79ce54a6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369502/normal_5fa2a7366ae52.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374535/normal_5f9de40178649.pdfIn PDF document text
    • https://puzemebakojufem.weebly.com/uploads/1/3/4/2/134234574/ligitadibifi-zikedufamasoged-zalinad-woremelu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424007/normal_5fa4abec863d2.pdfIn PDF document text
    • https://vorujefam.weebly.com/uploads/1/3/4/3/134322124/buvogad.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/wupixufekijax/anlage_n_aus_2017_formular.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/57405f79-1d44-4faf-a152-c7ad9cfda705/5829062711.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4906757e-fc8a-4bb9-a764-cea28ed06430/pimumejuge.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bd5302e8-c112-41f3-bc29-d384f56bf4ec/23471544720.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/acc317ca-d78d-4621-b480-448739f3b917/goruvisod.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/348b3ccb-4340-4bd0-95fa-b716b55c508c/dorazugitezuwezesunebit.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 4

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ca13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA13 5068 bytes
SHA-256: 60a395c109b2a7780e7caad791f18a2debc4f44d69eec40c2abd934a0ce8d697
font_01_sfnt_off0000db3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB3D 16332 bytes
SHA-256: d153f444632c3f1edb7e630d24c7ae8af4aef4026f06944aacc17474b8c76109
font_02_sfnt_off00010a6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A6E 16744 bytes
SHA-256: b8bfcda7876bab422c388831aafce616b301a89844ae079dd3a53a8e44567c01

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