Malicious PDF — malware analysis report

Static analysis result for SHA-256 09876a750406634d…

MALICIOUS

PDF

83.6 KB Created: 2020-08-08 15:16:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0d75849415df87bb193cfec5c43b8f37 SHA-1: e28ec371bc9b3f52e97140b2e859a57db6b1fda3 SHA-256: 09876a750406634d485c77b554a6ee4b43a1c2730326719512852a4de21a18c3
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a link farm designed to mimic search results, directing users to download other PDFs. The primary malicious link, 'https://ttraff.cc/pify?keyword=pathfinder+bestiary+3+pdf+free+download', is identified as a malicious redirector. This suggests the document's purpose is to drive traffic to potentially harmful content or exploit kits, likely as part of a phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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=pathfinder+bestiary+3+pdf+free+download
    • http://files.creativepathwaysprep.com/uploads/1/3/1/3/131380158/bijex_zalavojujola_puwagatiraxo_fefutifew.pdf
    • http://files.skincareboutiqueatfacestudioandwellnesscenter.com/uploads/1/3/1/8/131856158/bopaginen_filulixanobine_gogisuxopa_tivokamotogef.pdf
    • http://nogetora.firstpressiloam.com/uploads/1/3/2/6/132682883/dezanosigexebe.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/2186/8960/files/jojolijakomit.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kofuf.pdf
    • https://cdn.shopify.com/s/files/1/0433/3964/5093/files/94596068028.pdf
    • https://cdn.shopify.com/s/files/1/0430/1769/9477/files/63769376006.pdf
    • https://cdn.shopify.com/s/files/1/0431/0892/5602/files/65623430351.pdf
    • https://cdn.shopify.com/s/files/1/0430/9758/7861/files/mijasopatulaleron.pdf
    • https://cdn.shopify.com/s/files/1/0429/3066/7673/files/wofevusufijowegubi.pdf
    • https://cdn.shopify.com/s/files/1/0430/0180/6997/files/zepisuvalajov.pdf
    • https://cdn.shopify.com/s/files/1/0436/1060/3677/files/lagowo.pdf
    • https://cdn.shopify.com/s/files/1/0432/4104/6171/files/vapaxisuwof.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000106d4.bin
a20beb9d2ff50db20c6f047f3e52a49e2192f5ffc868414cf745eded4b923a85
pdf-font-stream PDF embedded font (sfnt) at offset 0x106D4 5628 bytes
font_01_sfnt_off00011a05.bin
3cdb2592ce2ac93f042f0511fe285d2f8438253ef2309bb056849a19745dd8c2
pdf-font-stream PDF embedded font (sfnt) at offset 0x11A05 11508 bytes