Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ee8b3156644b99b…

MALICIOUS

PDF

39.5 KB Created: 2020-08-18 22:13:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9176c60037d86de164df7f2a1c3027a2 SHA-1: 2d2b02a777d3e87e1b3b32fc7a843522588f49f9 SHA-256: 9ee8b3156644b99b8498df6535bde92124d398959c936edf0dcc188733ad90f2
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one critical heuristic identifying a link to a known malicious redirector. The document body, though partially corrupted, suggests a lure related to a 'Razer atheris mouse manual'. The presence of a link farm further indicates a malicious intent to redirect users to potentially harmful content. The primary malicious IOC is the redirector URL.

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=razer+atheris+mouse+manual
    • http://files.wycliffelutterworthu3a.org/uploads/1/3/0/7/130738652/b7bd23746.pdf
    • https://cdn.shopify.com/s/files/1/0435/0889/1807/files/30543024225.pdf
    • https://cdn.shopify.com/s/files/1/0438/9902/7611/files/roasted_pumpkin_seeds_nutritional_information.pdf
    • https://cdn.shopify.com/s/files/1/0430/4958/2743/files/bajujufejo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tolipokegegami.pdf
    • https://cdn.shopify.com/s/files/1/0436/9544/0040/files/kovepavaseketu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kuzizurogepibisomagin.pdf
    • https://cdn.shopify.com/s/files/1/0437/5114/5626/files/7314472509.pdf
    • https://cdn.shopify.com/s/files/1/0428/2168/1315/files/vezuxetedubebuzetuf.pdf
    • https://cdn.shopify.com/s/files/1/0436/1371/6643/files/adjective_clause_multiple_choice_test.pdf
    • https://cdn.shopify.com/s/files/1/0427/8085/2383/files/18034317669.pdf
    • https://cdn.shopify.com/s/files/1/0444/4022/3911/files/ninasesuxu.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005e83.bin
88181c57a1de74dad42402189bff54d16834a57536256a1704e0cb89bcc3f37c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E83 4980 bytes
font_01_sfnt_off00006f55.bin
351a27f3ea771fbdba3813e05d54782498e54000fb18dc1311a5e053cd4a4422		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F55 9948 bytes

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