Malicious PDF — malware analysis report

Static analysis result for SHA-256 774cc92874be24fa…

MALICIOUS

PDF

80.7 KB Created: 2020-09-07 04:02:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6b501b583998118abaeeffd0080df58b SHA-1: c12ea98d7d4d27dc0af463e36454f3d30bc35316 SHA-256: 774cc92874be24fa94a33a3d24beb33a9d54b4dceb8b6d8d54857b6c2f3e90e4
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, ttraff.club, which is designed to lead users to malicious content. The document body, though heavily obfuscated, contains text related to 'mapa politico asturias pdf' and the malicious URL itself, suggesting a lure to disguise the malicious intent. The presence of numerous external PDF links further indicates a link farm used for SEO manipulation or distributing 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.club/wix?keyword=mapa+politico+asturias+pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0431/8317/7885/files/56238687768.pdf
    • https://cdn.shopify.com/s/files/1/0431/6971/0241/files/97498818224.pdf
    • https://cdn.shopify.com/s/files/1/0434/1799/3366/files/millennium_development_goals_zimbabwe.pdf
    • https://static.usrfiles.com/ugd/6240f8_9915541857ac4fba92b195528da1f133.pdf
    • https://static.usrfiles.com/ugd/f34323_6897966f689f47d49c403bbf0d20ce81.pdf
    • https://static.usrfiles.com/ugd/c81504_a04efba649774d9bbb8919dea5605954.pdf
    • https://static.usrfiles.com/ugd/97634b_58879e94a7fe4dc9acd991149b4ccc67.pdf
    • https://cdn.shopify.com/s/files/1/0432/5572/6238/files/gogovevuforatexijo.pdf
    • https://cdn.shopify.com/s/files/1/0432/6601/5400/files/maxesa.pdf
    • https://cdn.shopify.com/s/files/1/0428/7637/1110/files/33340694857.pdf
    • https://cdn.shopify.com/s/files/1/0431/2439/2087/files/xifazugonej.pdf
    • https://static.usrfiles.com/ugd/ddb60a_7c1bed600f6f47d5bf7d5c94281c7118.pdf
    • https://static.usrfiles.com/ugd/49f5ef_a46c2d5368c949cc9915b8be9c7f8b4f.pdf
    • https://static.usrfiles.com/ugd/1a89c8_34391fab4b2e46c4a5427e1009293282.pdf
    • https://static.usrfiles.com/ugd/6908d7_4aa6112d838e4f8897f28ae6e9b45706.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_off0000f3b7.bin
91c55fb0d2d22c6a2b48eda663cee769e93647320b3229421b080d462c0e9224
pdf-font-stream PDF embedded font (sfnt) at offset 0xF3B7 5156 bytes
font_01_sfnt_off0001055b.bin
ad41fe4a528c156da9c220b5216d3f6a16301d8c84b263830363b26e968bbba7
pdf-font-stream PDF embedded font (sfnt) at offset 0x1055B 15792 bytes