Malicious PDF — malware analysis report

Static analysis result for SHA-256 808c2ac40edb7499…

MALICIOUS

PDF

66.6 KB Created: 2020-08-31 05:31:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 522eff4cbd4bc819190ee44b5ea47a0a SHA-1: b2100d418ff6cfee92c78728bca49a709b027666 SHA-256: 808c2ac40edb7499f7cd291224e08bff08313dbd4932785eac04382739491219
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector infrastructure, disguised with a keyword related to 'Percy Jackson Greek Gods pages'. This suggests a phishing or scam attempt, likely delivered as a spearphishing attachment. The PDF also contains a large number of links to other PDFs hosted on Shopify and static hosting sites, indicating a link farm designed to obscure the ultimate destination or spread malicious content.

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/wix?keyword=percy+jackson+greek+gods+pages
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/9714/4990/files/55968206525.pdf
    • https://cdn.shopify.com/s/files/1/0450/3240/7198/files/muzefuxubam.pdf
    • https://cdn.shopify.com/s/files/1/0431/3504/1685/files/60749439930.pdf
    • https://static.usrfiles.com/ugd/b8c837_2d075c833b8c441498b884f0f9adf0fa.pdf
    • https://static.usrfiles.com/ugd/9c43ec_01bb34974b6041789748b8bc46704768.pdf
    • https://static.usrfiles.com/ugd/b8bbd7_e900d049e40840c1b45c745361f58755.pdf
    • https://static.usrfiles.com/ugd/89c6ad_c9d5a539db844d2eb734b94eb3d310a5.pdf
    • https://static.usrfiles.com/ugd/b8c837_438e1362bc0744e18a14f7939ea4c637.pdf
    • https://static.usrfiles.com/ugd/34ec99_61c24a986b754fd1b6678bf8c01521d6.pdf
    • https://static.usrfiles.com/ugd/65b209_fa07c88c1aef4f77a6d157c9017c7b8d.pdf
    • https://static.usrfiles.com/ugd/b8c837_5be4f193f219455d8047db8ff99135ce.pdf
    • https://static.usrfiles.com/ugd/b8c837_c05975b7ef7d48009a5b7e423293b265.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_off0000c603.bin
36973708c3a3c29e911eb398564e8baf539522230b803218ef5a9a25709b01a8
pdf-font-stream PDF embedded font (sfnt) at offset 0xC603 5452 bytes
font_01_sfnt_off0000d8af.bin
75daf017aa1d82e1c1c175dbeb325764365bdea80bd7dfe20529cd0b8d127355
pdf-font-stream PDF embedded font (sfnt) at offset 0xD8AF 10896 bytes