Malicious PDF — malware analysis report

Static analysis result for SHA-256 084a112295000c74…

MALICIOUS

PDF

73.9 KB Created: 2020-12-18 12:39:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 56137e7c33d936497f0a48e8981798ce SHA-1: 22a87004dfcf5252d5fe4140b79b5b60ecf788ff SHA-256: 084a112295000c74d8adad92f88718362931e126169330c31254553a9eb30912
164 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous external links, a common tactic for link farms and phishing campaigns. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded links suggest it's designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=throttle+body+injection+unit PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4498994/normal_5fc377578b315.pdfIn PDF document text
    • https://wemibevufiwoseb.weebly.com/uploads/1/3/0/8/130813314/kinerubefitem.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418180/normal_5fd67ca2eaa0d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411923/normal_5fcdb7602a719.pdfIn PDF document text
    • https://nikojaba.weebly.com/uploads/1/3/4/6/134683319/sozixuzolo.pdfIn PDF document text
    • https://xonuvalax.weebly.com/uploads/1/3/1/4/131437330/salarozabi-motedusowo-fusumijus.pdfIn PDF document text
    • https://niruzezigup.weebly.com/uploads/1/3/4/8/134889773/xivapedozimofanalu.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/jamokaroxoj/bpsk_transmitter_and_receiver.pdfIn PDF document text
    • https://s3.amazonaws.com/gifiz/batuworuduwejudoxezusik.pdfIn PDF document text
    • https://s3.amazonaws.com/potamotaz/liboxerivibogirinizuber.pdfIn PDF document text
    • https://s3.amazonaws.com/janodojivi/examples_of_continuous_variables_and_discrete.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3d61377d-b720-47fb-a962-d8347611f047/fungicida_natural_para_la_piel.pdfIn PDF document text
    • https://s3.amazonaws.com/salosibejodod/simebivuwatologilafapor.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 8

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_off0000e73e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE73E 4908 bytes
SHA-256: ff727ea8e16f0527be46de7945a186a5874957f36425298f6110954e2bee92ee
font_01_sfnt_off0000f7ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7EF 10336 bytes
SHA-256: b33675be15792339d3555a40513b6cf99925f5c99082b7f71ee0cef7fa65610e

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