Malicious PDF — malware analysis report

Static analysis result for SHA-256 d38685c332cecf06…

MALICIOUS

PDF

62.6 KB Created: 2020-11-18 17:58:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: c1a699658503aa29480428558dfc3aed SHA-1: 2dc5c2518ac56d3c36c5546f3ab27d50ba51301b SHA-256: d38685c332cecf0618815e13c5c797937e73b798deb9dace97b696290b5a572f
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains numerous external links, with a critical heuristic flagging it as a 'PDF_SEO_LINK_FARM'. One of the primary external URIs points to 'traffnew.ru', which is likely a malicious domain used for phishing or distributing further malware. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan.

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://traffnew.ru/123?utm_term=mp3+mp4+film+indir PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4367300/normal_5f8a2f95a42e2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366311/normal_5f90ebd601ad2.pdfIn PDF document text
    • https://xujaxivef.weebly.com/uploads/1/3/1/4/131438557/78e6dac58.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485010/normal_5fa87e89a8f81.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/6a729839-138d-4978-a2ce-b5fa48e4314f/act_test_61c_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/361b8f76-c2ef-4344-9fd3-21468ee58758/27580512153.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4424b913-ac3b-4483-8947-4a6fe4dd7aa0/91389908105.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb31ea84-6a9a-461d-989b-796606047193/lofimosubilobisiwexigufas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c88bc4cb-1fef-4090-a48e-53a599b1991c/sufigimafidejasovir.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/abf49469-1e50-4971-bd11-72288c1bdc4e/black_desert_handelswagen.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c617385e-224e-44d4-8f13-c5856740fd4e/fotudaworegezirujibinibu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b59e0f6e-6963-41bb-b385-9ae831972de2/narobokazamomubesezurarol.pdfIn PDF document text
    • https://s3.amazonaws.com/bidivo/play_earn_to_die_2_unblocked_games.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 4

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_off0000b68b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB68B 5056 bytes
SHA-256: 8fd6a6c410f5fc0f080a9ef44567a96df1339787acde9fb03463f12387f41f42
font_01_sfnt_off0000c7c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7C2 12144 bytes
SHA-256: 1b9fd01287f78008072ca7e3b85b1db2c68b89095ae3cd7d7a0256047970a0d0

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