Malicious PDF — malware analysis report

Static analysis result for SHA-256 309ffab5f8bbcf23…

MALICIOUS

PDF

50.4 KB Created: 2020-07-30 09:35:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 9496fda168d9d6e29f6932872cd07aa2 SHA-1: 781a8015b73aa1a3315671029caebba0a2b21c98 SHA-256: 309ffab5f8bbcf230f1b8bb7a9a7b781714198ea81cd8c68dc3cb27632a22f79
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous embedded links, with one critical heuristic firing indicating a link to known malicious redirector infrastructure. The document body, though heavily obfuscated, suggests a lure related to 'carbon credits in Colombia'. The presence of a link farm further supports a malicious intent, likely to redirect users to phishing or scam content. 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.cc/pify?keyword=bonos+de+carbono+en+colombia+pdf In PDF document text
    • http://files.kayliquirk.com/uploads/1/3/1/4/131437444/kekop-jefawel.pdfIn PDF document text
    • http://files.shamaratarian.com/uploads/1/3/0/8/130874332/misivafuk-gapud-kurosazozil.pdfIn PDF document text
    • http://files.cupe2026.ca/uploads/1/3/0/8/130873810/1b02de2da7a40c4.pdfIn PDF document text
    • http://files.adorablefrenchbakery.com/uploads/1/3/2/7/132710638/redizo.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/1/0432/3049/4878/files/debivoruwedewekukurag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1280/8091/files/40225321833.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8030/3267/files/nopirubovi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7460/7514/files/20384122176.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3600/6810/files/rupupofalasimuvezozup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4405/9806/files/tibazikevituxata.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9004/3287/files/fagelesatolasewugedogu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/memew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1141/5962/files/rupimufetud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6600/7445/files/vipug.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8286/6072/files/15457676009.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5241/7703/files/87646126594.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 6

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_off00008339.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8339 5196 bytes
SHA-256: 84bf2a6f95afde7aea80140af7d84eb4c01894e14b94e659119acb2bd55e8234
font_01_sfnt_off000094b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x94B2 11672 bytes
SHA-256: 81fdb9b2077ea4619bef538df54d8c3ff203ec45045a1d97e6142d3a064053b9

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