Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f0a38cff3d52e3e…

MALICIOUS

PDF

41.9 KB Created: 2020-08-06 22:23:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2af2002ca923547df53368f12bc47137 SHA-1: 7b4e0179b2406aea1b3ba9a64c6f0192fd3fcdde SHA-256: 3f0a38cff3d52e3ea5c651e1429144286092fb10d66e32980d111b074e9b61ef
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded links, many pointing to what appears to be a link farm hosted on Shopify, with one specific redirector URL identified as malicious. The document body text, though partially obfuscated, includes the malicious redirector URL, suggesting an attempt to lure users to malicious content. The ML classifier strongly indicated maliciousness, and the PDF structure itself is flagged for containing a mass external PDF link farm.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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://ttraff.cc/pify?keyword=que+es+el+neoliberalismo+y+sus+caracteristicas+pdf In PDF document text
    • http://files.psychoneirology.org/uploads/1/3/0/8/130874110/kowoxexafebos.pdfIn PDF document text
    • http://files.mho-thevenue.com/uploads/1/3/0/7/130738753/3455224.pdfIn PDF document text
    • http://files.nightsupakaroa.co.nz/uploads/1/3/1/8/131871439/9e3f16.pdfIn PDF document text
    • http://files.bingocompany.net/uploads/1/3/1/3/131379612/d2857f2095895b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5115/5618/files/zijewelisaruj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6971/8182/files/12189348489.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2672/7580/files/manual_do_proprietario_kia_cerato_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8144/1181/files/eclipse_java_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3976/9254/files/jibil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4405/9806/files/zujikutinaxagujugipupiri.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0444/3871/6583/files/biocontrol_agents.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2553/8965/files/the_millionaire_next_door_2010.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5294/7873/files/25903577154.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1604/5222/files/88078172806.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0265/8979/files/73422794009.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_off000064ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64EE 5604 bytes
SHA-256: b4b86515f822c7331ab55b7520ca74091d474a650d38a56c507b403379fc7407
font_01_sfnt_off000077e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77E2 10656 bytes
SHA-256: 197f71c7687489e3b9e482dabb17f9a2aa8a54f056247c49ad40cea518cfb8c4

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