Malicious PDF — malware analysis report

Static analysis result for SHA-256 7810e771944b7ced…

MALICIOUS

PDF

43.2 KB Created: 2020-08-30 06:23:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7b53cc1f8859d17a7e5bc6c48ce5c27a SHA-1: a79f8bbf78b389ff201daadcff1da7d93fc4ed3f SHA-256: 7810e771944b7cedd6cac7e62b61f8a8279be40af3eb3e250a78892290bf790a
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, including one that redirects to a malicious domain, disguised as a download for a political map. This indicates a social engineering attempt to trick users into visiting a potentially harmful site. The ML classifier also strongly flagged this PDF as malicious.

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=blank+political+map+of+india+pdf+download
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0433/4511/7342/files/20626017078.pdf
    • https://cdn.shopify.com/s/files/1/0433/6294/3127/files/nimerazosenabeted.pdf
    • https://cdn.shopify.com/s/files/1/0431/8851/9076/files/81054047598.pdf
    • https://cdn.shopify.com/s/files/1/0435/0754/8326/files/counter_strike_pc_game_windows_7.pdf
    • https://cdn.shopify.com/s/files/1/0428/4317/7126/files/gerarutidumeretafagoduk.pdf
    • https://static.usrfiles.com/ugd/6846fe_7dc6b95773e94c7cba2e1d4a9daac872.pdf
    • https://static.usrfiles.com/ugd/b8c837_8e1aa1f06bcf4ed6b8c94da83f48776a.pdf
    • https://static.usrfiles.com/ugd/e73fea_05b42a05d1dd4dc1b05a46f763566f4b.pdf
    • https://static.usrfiles.com/ugd/b8c837_8d6aea8c2aee497888f58e33595ee7da.pdf
    • https://static.usrfiles.com/ugd/b8c837_83a6177815bb45f1bf535570ea7ac4f8.pdf
    • https://static.usrfiles.com/ugd/b8c837_0a099aa030a84d0eb09d07f9fefb500f.pdf
    • https://static.usrfiles.com/ugd/2f8cea_e48ddab9157145b9932779501014a8ed.pdf
    • https://static.usrfiles.com/ugd/2813e2_d667a393e749474b97cecb9dc34d3404.pdf
    • https://static.usrfiles.com/ugd/b8c837_2c86a6a768184e918a51f511b9c0e906.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_off00006afb.bin
182ac50c74fa820820940896fb3f9664e5c0f48721edd5c7b293ba6ddfabf263
pdf-font-stream PDF embedded font (sfnt) at offset 0x6AFB 5232 bytes
font_01_sfnt_off00007ccd.bin
97104e4b2eba5380d58b55a650211907370bbc07689debbc0e555733bf463d20
pdf-font-stream PDF embedded font (sfnt) at offset 0x7CCD 10128 bytes