Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b0887a8ffcb89cb…

MALICIOUS

PDF

48.0 KB Created: 2020-09-01 03:45:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 71700bc4da37bf309b1773ac8f6bb009 SHA-1: 092e168d9e78c1315cf81db329ad70bc7c08cc34 SHA-256: 2b0887a8ffcb89cbcaae32e5b7d2c44fc875cf2ea4acb8d8421d1e1b5dc0debf
120 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to the presence of a link farm containing numerous external links. One of these links, `https://ttraff.cc/wix?keyword=magellan+gps+explorist+200+user+guide`, points to known malicious redirector infrastructure. The document body contains obfuscated text and metadata suggesting it was generated by `wkhtmltopdf`, a tool sometimes used to create malicious PDFs. The primary attack pattern involves luring users through these links, which are part of a larger SEO link farm strategy.

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/wix?keyword=magellan+gps+explorist+200+user+guide
    • https://cdn.shopify.com/s/files/1/0434/1576/5153/files/autocad_underlay_resolution.pdf
    • https://cdn.shopify.com/s/files/1/0462/2739/0615/files/abyssal_sire_poh_guide.pdf
    • https://cdn.shopify.com/s/files/1/0432/2682/4859/files/66003437909.pdf
    • https://cdn.shopify.com/s/files/1/0427/9956/2911/files/91256239709.pdf
    • https://cdn.shopify.com/s/files/1/0433/9027/1642/files/21295194434.pdf
    • https://cdn.shopify.com/s/files/1/0437/8152/1560/files/zoology_notes_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/0892/5600/files/luwerelusijudaridovovalo.pdf
    • https://cdn.shopify.com/s/files/1/0429/9004/3287/files/jezos.pdf
    • https://cdn.shopify.com/s/files/1/0433/6674/4216/files/vinayaka_vratha_kalpam_telugu.pdf
    • https://cdn.shopify.com/s/files/1/0431/7010/3452/files/kapemag.pdf
    • https://cdn.shopify.com/s/files/1/0428/4504/4892/files/pavukilipamobanomoko.pdf
    • https://cdn.shopify.com/s/files/1/0434/4204/5090/files/die_antwoord_songs_free.pdf
    • https://cdn.shopify.com/s/files/1/0437/0356/6486/files/33216156687.pdf
    • https://cdn.shopify.com/s/files/1/0431/8868/2916/files/72400420949.pdf
    • https://cdn.shopify.com/s/files/1/0433/0576/2974/files/48127068026.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_off00007c8e.bin
2f50745933c2a7fb9a880b368e6e614a18b810df08285602e80a9aae095bc515		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C8E 5476 bytes
font_01_sfnt_off00008f4a.bin
3b2db3a2e76dcdcddc45162be86e4f46949856cb8e9de21a9d846c9f5bbb9039		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8F4A 10532 bytes

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