Malicious PDF — malware analysis report

Static analysis result for SHA-256 db09badeda3ab479…

MALICIOUS

PDF

69.9 KB Created: 2020-11-17 05:29:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 2ae0cb83a4c67746bf1d4e7f155e4be1 SHA-1: 2c2dda4a4e0e1bd677ad290e19d021109a9194ac SHA-256: db09badeda3ab479256f84384162d54dde532f2ef662f29638060f02ef35c0fa
214 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous links to external websites, many of which are flagged as part of a link farm or redirect to malicious infrastructure. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK specifically identifies a link to 'traffmen.ru' as malicious. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution via these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://traffmen.ru/123?utm_term=martin+luther+king+blueprint+speech+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4416791/normal_5fa4e622cdf17.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407562/normal_5f979f81760ee.pdfIn PDF document text
    • https://wexofele.weebly.com/uploads/1/3/4/6/134632346/8773418.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4428083/normal_5f995ddf7873d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366325/normal_5f8d6dfbd6ad4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401540/normal_5f960f0069622.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/2853c127-0d8c-407e-9370-bfda99f52ac7/spanish_3_test_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/kabisebax/who_is_amy_grant_married_to_before_vince_gill.pdfIn PDF document text
    • https://s3.amazonaws.com/rijaliwiguvex/28461126689.pdfIn PDF document text
    • https://s3.amazonaws.com/zunewidimem/79930116952.pdfIn PDF document text
    • https://s3.amazonaws.com/gujutavevive/fotudetawiri.pdfIn PDF document text
    • https://s3.amazonaws.com/widuxade/i_am_not_ashamed_of_the_gospel.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5434e6c8-f7ae-4a1b-ad33-066526888ae2/towemotemukomiburis.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_off0000d48f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD48F 5628 bytes
SHA-256: eb03ef9d4b43487bb571c9e89163fccd2dee4fad8a96a18c728a7bb7beecd1a3
font_01_sfnt_off0000e7b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7B1 10152 bytes
SHA-256: c2a7202b9c13578953133ec6ac686d40eca1931d73b963aed72d79dd2c0e7f13

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