Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a95f07ddfd22782…

MALICIOUS

PDF

73.9 KB Created: 2020-11-18 14:32:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 2c5c1cadeac031453d1a2b25be92d1ab SHA-1: 17a86e5634894f3b09eedf13df3503c13c8263c9 SHA-256: 1a95f07ddfd2278251f42ae566379b8d7227bdc8199a5c081d28a0d0cb0b135c
254 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains multiple heuristics indicating malicious redirector links and a link farm, pointing to phishing or malware distribution. The primary malicious URL identified is 'https://traffking.ru/123?utm_term=genesis+land+of+confusion+tab', which is flagged as a redirector. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to direct users to malicious content, aligning with spearphishing tactics.

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
  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://traffking.ru/123?utm_term=genesis+land+of+confusion+tab In PDF document text
    • https://cdn-cms.f-static.net/uploads/4416132/normal_5fa1f4bb423b4.pdfIn PDF document text
    • https://lorebigida.weebly.com/uploads/1/3/4/3/134377432/3cf439a61fa15e8.pdfIn PDF document text
    • https://kawifapexevudo.weebly.com/uploads/1/3/4/7/134711131/zulasewox.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417658/normal_5f969db9953fb.pdfIn PDF document text
    • https://zoxetojasag.weebly.com/uploads/1/3/1/4/131437223/lewixax-difisevar.pdfIn PDF document text
    • https://zalopajozi.weebly.com/uploads/1/3/1/4/131453352/901d7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458827/normal_5fa9aef883563.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366040/normal_5f870625ec9eb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484997/normal_5faac78106e31.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390095/normal_5f9547320e3fd.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/liguwubore/39397210464.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d4f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4F4 4972 bytes
SHA-256: 348399b13457cd425f2654253259416fe6ee7bbed195c34e34112fefdff2fa08
font_01_sfnt_off0000e5e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5E6 11880 bytes
SHA-256: 5dd35516516319b33fecf814393fd752c7e463c58fc3ff12c0016e023992c35e
font_02_sfnt_off00010cf4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CF4 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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