Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc2a946ce9fefb5d…

MALICIOUS

PDF

67.8 KB Created: 2020-11-13 12:35:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: ff6a414cfee195b3d5ef4e31ec8d4c59 SHA-1: 9c700cd4dae28be80249fa8ae4708ff5ef024aeb SHA-256: dc2a946ce9fefb5dafadce4e1c1fac4e472c45aa167752a7cccfb5fd688bc18e
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://traffset.ru/123?utm_term=fsu+baseball+schedule+2020 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4379849/normal_5faab9e96c189.pdfIn PDF document text
    • https://xazapadikud.weebly.com/uploads/1/3/1/8/131871762/1cbcd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403683/normal_5f93c59c0e05f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403417/normal_5fa8869c47e11.pdfIn PDF document text
    • https://zufopawel.weebly.com/uploads/1/3/4/4/134462865/kewejoguratupora.pdfIn PDF document text
    • https://kesamitowusiniw.weebly.com/uploads/1/3/4/4/134441112/gosop.pdfIn PDF document text
    • https://zadelenipavuluv.weebly.com/uploads/1/3/4/5/134595340/lateda.pdfIn PDF document text
    • https://rarowovi.weebly.com/uploads/1/3/4/6/134664267/310149.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421056/normal_5fa6c2b49327c.pdfIn PDF document text
    • https://pidadilux.weebly.com/uploads/1/3/4/6/134666204/bazarerin-surilugajexu-jusibut-jopaxig.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/vasagesorajirem/girl_names_that_start_with_e_yahoo.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/carnot_cycle_efficiency_derivation.pdfIn PDF document text
    • https://s3.amazonaws.com/takeju/dirixalativ.pdfIn PDF document text
    • https://s3.amazonaws.com/jolufozo/2020_cubs_printable_tv_broadcast_schedule.pdfIn PDF document text
    • https://s3.amazonaws.com/zasepo/marketing_public_relations.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_off0000ca6a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCA6A 5300 bytes
SHA-256: 2ae29c8b6caaad25d4bcf0f8c775012c1325e48607bb23555da3d24c7096feba
font_01_sfnt_off0000dc68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC68 11420 bytes
SHA-256: 1f6c024800572050bc7da2ef0ea1c3eec3f4e255cbdeee75f0444bc58f44f613

Open this report in the interactive analyzer, or submit your own file for analysis.