Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d6bbccfa6276a16…

MALICIOUS

PDF

41.1 KB Created: 2020-08-07 07:42:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 9533d4bf84de1d9e0d6dce194366b412 SHA-1: a74bf05c266ebba648dc551d426c30649b414427 SHA-256: 1d6bbccfa6276a1683f037601e69a454d1e0252fa5e6b00c388039305d1c9802
194 Risk Score

Malware Insights

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

The PDF contains a mass of external links, with one critical heuristic identifying a link to a known malicious redirector. The document body, though heavily obfuscated, contains the URL that triggered the redirector heuristic. This suggests the document is designed to drive traffic to malicious infrastructure, likely for further exploitation or phishing. No scripts were extracted from this sample.

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.com/wb?keyword=naming%20acids%20quiz%20pdf In PDF document text
    • http://files.swiftcooper.com/uploads/1/3/2/8/132815054/c11506deb0d.pdfIn PDF document text
    • http://files.vapeboss.shop/uploads/1/3/0/8/130814078/559e8ddf5.pdfIn PDF document text
    • http://files.4pillarshobbyshop.com/uploads/1/3/2/3/132302718/korazalo.pdfIn PDF document text
    • http://files.perfectpatternz.org/uploads/1/3/1/3/131380138/8e0e42f15e.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/1/0437/8309/4434/files/aiims_pg_prospectus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7751/5929/files/xalokok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2834/8060/files/how_to_use_digital_multimeter_for_mobile_repairing.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/0019/0360/files/88724669638.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1019/5605/files/dokitaleseluvi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7767/1843/files/lomunofeji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0015/8629/files/antony_and_cleopatra_modern_english.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/80463449019.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2784/0669/files/11235040458.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2661/1357/files/tilapomuda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/9554/4228/files/lottery_program_python.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0446/9565/0457/files/wamaxadinasuxigejesikizu.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 3

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_off000060cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60CD 5492 bytes
SHA-256: 63cf0594490e7cf146ae121b82e76690f7e1b75343ac32fedfd7cca1bbfb2817
font_01_sfnt_off0000737b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x737B 10640 bytes
SHA-256: 5599025f1c251d0be69e18613f39d3f3e3679baabb20fb5ada13ec8f9b048e5d

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