Malicious PDF — malware analysis report

Static analysis result for SHA-256 6296ed4ab07aaee7…

MALICIOUS

PDF

46.6 KB Created: 2020-08-19 05:12:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7c57361ec555bbe2aef005ae332be723 SHA-1: 2f2e31949041b690690957e4a17c0790404bef6c SHA-256: 6296ed4ab07aaee7b94f525e29277782661bc1292cc7274c6af9e54d30ea44f3
154 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to a known malicious infrastructure, specifically ttraff.com. The document body, though heavily obfuscated, also contains this URL, suggesting an attempt to lure users to malicious content. The presence of numerous external PDF links further indicates a link farm or SEO manipulation tactic, likely to obscure the true malicious intent.

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/pify?keyword=lemon+yonezu+kenshi+sheet+music
    • http://xigolet.howtocakethat.com/uploads/1/3/1/3/131398252/9315388.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/5554/6517/files/30530379863.pdf
    • https://cdn.shopify.com/s/files/1/0435/8442/2051/files/farmacologia_antibioticos.pdf
    • https://cdn.shopify.com/s/files/1/0434/7900/7398/files/dofabikalujazuzaminox.pdf
    • https://cdn.shopify.com/s/files/1/0433/2571/8678/files/tejirunavamazawasasabomow.pdf
    • https://cdn.shopify.com/s/files/1/0433/8561/8583/files/77231738039.pdf
    • https://cdn.shopify.com/s/files/1/0427/5005/0460/files/zojasapudagonegugofe.pdf
    • https://cdn.shopify.com/s/files/1/0439/3995/4856/files/piezas_en_perspectiva_caballera.pdf
    • https://cdn.shopify.com/s/files/1/0433/9305/6933/files/pivajedi.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004839.bin
be1911ddc0249e30ac4ddcb770682c9412ab1f57bc82bcdacd2c537a26ccafaf
pdf-font-stream PDF embedded font (sfnt) at offset 0x4839 3980 bytes
font_01_sfnt_off0000563a.bin
6e43a16eb106f5ff151c46b358fd08b0bc9296c64bbc3e8bea78b90c1045096a
pdf-font-stream PDF embedded font (sfnt) at offset 0x563A 4856 bytes
font_02_sfnt_off000066b7.bin
e456c96f27b98686de5bc921ca9ce07923f28e11f053beec586944e3e021272e
pdf-font-stream PDF embedded font (sfnt) at offset 0x66B7 15320 bytes
font_03_sfnt_off00009690.bin
dbf142a5ee5912dba0d06f749c68ada68fc433a58d5d71ae416dbac8ced49b19
pdf-font-stream PDF embedded font (sfnt) at offset 0x9690 16080 bytes