Malicious PDF — malware analysis report

Static analysis result for SHA-256 aaea2ef79b345e17…

MALICIOUS

PDF

42.0 KB Created: 2020-08-31 09:18:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 35b589308763051881f6e65f8aa662aa SHA-1: 7c4cc5ad93d8ca554626a6fd7b5939d9d0c70a67 SHA-256: aaea2ef79b345e173016733f2ebadc4c61319eaaac1129031bb88a36596f3268
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains numerous links, including one pointing to a known malicious redirector infrastructure at 'ttraff.com'. The document body, though heavily obfuscated, contains text related to 'Mack truck manuals', suggesting a lure to entice users to click the malicious link. The presence of a large number of external PDF links, many hosted on Shopify, indicates a link farm designed to improve SEO for 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.com/wix?keyword=mack+truck+manuals
    • https://cdn.shopify.com/s/files/1/0430/1901/0201/files/61405706736.pdf
    • https://cdn.shopify.com/s/files/1/0430/6078/9409/files/dashing_cm_bharat_full_movie_hd.pdf
    • https://cdn.shopify.com/s/files/1/0438/3378/6530/files/85041792180.pdf
    • https://static.usrfiles.com/ugd/b8c837_5bf50ae1afd24b6fb38718fd7279e402.pdf
    • https://static.usrfiles.com/ugd/a1fb72_54043052bf32452b95ffce0ec7529845.pdf
    • https://static.usrfiles.com/ugd/0a0016_a3efb02962244453bbccd0166ad98c19.pdf
    • https://static.usrfiles.com/ugd/60933b_44e2820ea2974f4586ec5c0ad10f41a5.pdf
    • https://static.usrfiles.com/ugd/5e81b9_36bcc74c9f914e89a6cee1bac0626a92.pdf
    • https://static.usrfiles.com/ugd/a31856_fd9713f853c8478bb67b59c2ff3fa86d.pdf
    • https://static.usrfiles.com/ugd/b48b60_36ba5272657245bfbc31fa2ed4ac7b13.pdf
    • https://static.usrfiles.com/ugd/b8c837_c2073b104cc74ced9fdaba9c8dc72939.pdf
    • https://static.usrfiles.com/ugd/f46427_b31f6c22a11445d4b4613731341d9a9a.pdf
    • https://cdn.shopify.com/s/files/1/0439/4654/1211/files/nuworilamogomim.pdf
    • https://cdn.shopify.com/s/files/1/0432/5428/4450/files/latifurabozopas.pdf
    • https://cdn.shopify.com/s/files/1/0430/8392/3609/files/75793300499.pdf
    • https://cdn.shopify.com/s/files/1/0431/2124/6359/files/dekiporipagelarulo.pdf
    • https://cdn.shopify.com/s/files/1/0435/8062/0963/files/xaremofosemitedugaje.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_off00005d06.bin
04557e7277f2d22a5eaf826408bf3e2268cbc946cc13c8257fea0cc8489d639a
pdf-font-stream PDF embedded font (sfnt) at offset 0x5D06 5012 bytes
font_01_sfnt_off00006dfa.bin
106f60c5fb8c4b1ff02a9267864e921087f318f89bdf89644965d71805b07480
pdf-font-stream PDF embedded font (sfnt) at offset 0x6DFA 14676 bytes