Malicious PDF — malware analysis report

Static analysis result for SHA-256 02a9273b6b80ec6b…

MALICIOUS

PDF

64.2 KB Created: 2020-11-23 01:39:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 27d4279433cffb0c3c50fed399ee230b SHA-1: b9aa175c196bcfc1abdedc81b484b3ca6a2d6cdc SHA-256: 02a9273b6b80ec6b5356d20435d467ba9d8c98ef8260c55362a2a1e74656e961
254 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file contains numerous links to external websites, many of which are part of a link farm designed to distribute malicious content. The primary link redirects through a malicious redirector, ultimately leading to a PDF download. The presence of a ClamAV detection for 'Pdf.Phishing.Trojan' and ML classifier flagging further supports its malicious nature. No scripts were extracted, but the document's structure and embedded links indicate a phishing and malware distribution attempt.

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://traffine.ru/123?utm_term=carry+on+mr+bowditch+study+guide+pdf In PDF document text
    • https://tibanevugite.weebly.com/uploads/1/3/4/6/134655495/wowivog-wabux-fipalogud.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418170/normal_5fb7d8905d3ce.pdfIn PDF document text
    • https://nazizuvadonilu.weebly.com/uploads/1/3/4/5/134590702/setotefawo_fudowigozatum.pdfIn PDF document text
    • https://maritomumotoko.weebly.com/uploads/1/3/4/5/134512683/5101de.pdfIn PDF document text
    • https://nujidigazinuwag.weebly.com/uploads/1/3/4/3/134318548/suvenezoxivel.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385633/normal_5faf330122102.pdfIn PDF document text
    • https://woxomeze.weebly.com/uploads/1/3/4/4/134498023/tenemuremupir.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381090/normal_5f9455b839514.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425737/normal_5fa70c6a7e425.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/d7d3b026-cffb-4c22-8995-7d0e99908f19/cognos_report_studio_landscape.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d98e1f4e-976b-4a09-a902-98a73fa44416/honda_lawn_mower_repair_manual.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_off0000bdd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBDD9 5776 bytes
SHA-256: 3c1f6514f344443d2b8da7bf63b9cecaa72f5c6bbe463dd66f9cadc713b7b4ba
font_01_sfnt_off0000d169.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD169 10224 bytes
SHA-256: 2d19e44db669c4361c42c054faf28d40eb2303c660b9434cdbf3af207b34a6e9

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