Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6f586e4049b088f…

MALICIOUS

PDF

34.5 KB Created: 2020-08-11 01:47:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f900c21e54b429b7430d65a96f1b6753 SHA-1: 6928b39cd6066f3d496b5ab4312e0fe654188c2b SHA-256: c6f586e4049b088f54bf4fb155d9cf88ecc68a1f3991327ee10a55684a55a6ca
152 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to a known malicious domain, ttraff.cc, disguised as a free download for 'The Case for Christ'. This indicates a phishing or malware distribution attempt. The PDF also contains a large number of external links, many pointing to Shopify, suggesting a link farm for SEO manipulation to attract victims. No scripts were extracted, but the primary malicious activity appears to be the redirection to the malicious URL.

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=the+case+for+christ+lee+strobel+pdf+free+download
    • http://files.nforchestra.org/uploads/1/3/1/6/131608037/9378916.pdf
    • http://files.myriversidefrenchcottage.com/uploads/1/3/1/8/131872238/715464e79640f11.pdf
    • http://mudagiv.christianpensel.com/uploads/1/3/0/8/130813747/3268631.pdf
    • http://tesukag.contemporaryedsolutions.com/uploads/1/3/1/3/131383483/6676439.pdf
    • http://files.stitchconnect.co/uploads/1/3/1/0/131070866/ripos.pdf
    • https://cdn.shopify.com/s/files/1/0428/1240/7967/files/petiwitamugipobiroxowefus.pdf
    • https://cdn.shopify.com/s/files/1/0432/6418/0390/files/19582272980.pdf
    • https://cdn.shopify.com/s/files/1/0434/4987/6630/files/videfimuwem.pdf
    • https://cdn.shopify.com/s/files/1/0427/9848/1564/files/37792091465.pdf
    • https://cdn.shopify.com/s/files/1/0438/0141/1744/files/lozelekosonisitov.pdf
    • https://cdn.shopify.com/s/files/1/0437/7473/8586/files/energia_e_meio_ambiente_livro.pdf
    • https://cdn.shopify.com/s/files/1/0438/6127/8870/files/68086946772.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/sazofafusogowo.pdf
    • https://cdn.shopify.com/s/files/1/0431/1321/8199/files/98644402272.pdf
    • https://cdn.shopify.com/s/files/1/0432/4560/0936/files/72955493595.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_off0000480e.bin
9672a2a20d1c343b03f573fcc90437e58d672f5728c73b0b86675820407f6f83
pdf-font-stream PDF embedded font (sfnt) at offset 0x480E 5424 bytes
font_01_sfnt_off00005a7e.bin
70e1624447ab96b1180354d81148fc169976c6ede7539ce11c5c5be35e2240d0
pdf-font-stream PDF embedded font (sfnt) at offset 0x5A7E 10088 bytes