Malicious PDF — malware analysis report

Static analysis result for SHA-256 06b35786edb20013…

MALICIOUS

PDF

67.3 KB Created: 2020-11-13 11:08:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 27f08f3a875976b10707470b9a5950ff SHA-1: 206e83bdb184ccad6af3dd603b0949fb6f737ab8 SHA-256: 06b35786edb20013e8ad8e9d5805e568249627838b171cb99663777c662bf5f2
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://trafffe.ru/123?utm_term=hale+middle+school+magnet PDF link annotation
    • https://lifotuvuzaraxur.weebly.com/uploads/1/3/0/7/130775275/riviwofiruzed.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450240/normal_5fa5dda175579.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413005/normal_5f9cf35420a63.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/jifesu/52315260072.pdfIn PDF document text
    • https://s3.amazonaws.com/fuwawibu/gagogifipe.pdfIn PDF document text
    • https://s3.amazonaws.com/sazariwapa/beetalk_for_pc_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/rimepusox/pdf_to_word_macedonian.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/46b8a466-8b08-474a-bf12-b6a2eeda5c9b/7796071243.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/153f1343-dfc3-4569-beda-86972e997b76/dedofuzakukovirusik.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/12f3011c-a36c-4e79-842e-5ca7ab43a5a1/59099441948.pdfIn PDF document text
    • https://s3.amazonaws.com/buxoparadazegu/werosubanumimugadedox.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b23a8681-5fa8-4575-ae3b-fb68038d0ae1/zakafimema.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2cd1b0d8-6345-47d5-9d6f-133e6101620c/20149918780.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

Related samples 3

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cca3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCA3 5220 bytes
SHA-256: c39cd9331e77e0e832cf1c05d5ce61b30713ebed56224797c720bf390179ca6b
font_01_sfnt_off0000de3e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE3E 9996 bytes
SHA-256: 5f0525c865d7db4358306239feb8fab53e8b92637dff1b17a548780e671e2d7f

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