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)
MD5: 9496fda168d9d6e29f6932872cd07aa2 SHA-1: 781a8015b73aa1a3315671029caebba0a2b21c98 SHA-256: 309ffab5f8bbcf230f1b8bb7a9a7b781714198ea81cd8c68dc3cb27632a22f79
120 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.

Heuristics 3

  • 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.
  • 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
    • http://files.kayliquirk.com/uploads/1/3/1/4/131437444/kekop-jefawel.pdf
    • http://files.shamaratarian.com/uploads/1/3/0/8/130874332/misivafuk-gapud-kurosazozil.pdf
    • http://files.cupe2026.ca/uploads/1/3/0/8/130873810/1b02de2da7a40c4.pdf
    • http://files.adorablefrenchbakery.com/uploads/1/3/2/7/132710638/redizo.pdf
    • https://cdn.shopify.com/s/files/1/0432/3049/4878/files/debivoruwedewekukurag.pdf
    • https://cdn.shopify.com/s/files/1/0433/1280/8091/files/40225321833.pdf
    • https://cdn.shopify.com/s/files/1/0428/8030/3267/files/nopirubovi.pdf
    • https://cdn.shopify.com/s/files/1/0437/7460/7514/files/20384122176.pdf
    • https://cdn.shopify.com/s/files/1/0437/3600/6810/files/rupupofalasimuvezozup.pdf
    • https://cdn.shopify.com/s/files/1/0436/4405/9806/files/tibazikevituxata.pdf
    • https://cdn.shopify.com/s/files/1/0429/9004/3287/files/fagelesatolasewugedogu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/memew.pdf
    • https://cdn.shopify.com/s/files/1/0431/1141/5962/files/rupimufetud.pdf
    • https://cdn.shopify.com/s/files/1/0431/6600/7445/files/vipug.pdf
    • https://cdn.shopify.com/s/files/1/0433/8286/6072/files/15457676009.pdf
    • https://cdn.shopify.com/s/files/1/0428/5241/7703/files/87646126594.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • https://cdn.shopify.com/s/files/1/0437/7460/7514/files/2038412

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008339.bin
84bf2a6f95afde7aea80140af7d84eb4c01894e14b94e659119acb2bd55e8234		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8339 5196 bytes
font_01_sfnt_off000094b2.bin
81fdb9b2077ea4619bef538df54d8c3ff203ec45045a1d97e6142d3a064053b9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x94B2 11672 bytes

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