Malicious PDF — malware analysis report

Static analysis result for SHA-256 e62bd67b4ca6a264…

MALICIOUS

PDF

60.8 KB Created: 2020-08-09 15:20:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1d1d6650a1c3a29a0bdfd534a1cb2629 SHA-1: e8d35fe1975c0b7f77317c22d11d300ff0452432 SHA-256: e62bd67b4ca6a2643cdd34e3e717081a11088d69dead116c1ebd0baecaa3388d
152 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.ru'. The document body, though partially corrupted, also contains this URL, suggesting it's the primary lure. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many pointing to Shopify, likely to obscure the malicious destination. The ML classifier 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.ru/pify?keyword=rendezvous+with+rama+pdf+free
    • http://files.johnvukusic.com/uploads/1/3/1/3/131380031/c3ab01de1d6896.pdf
    • http://neveze.familyreunion21.com/uploads/1/3/1/4/131407089/gidumavatipoxa_lebagi_videb.pdf
    • http://files.drakehill.org/uploads/1/3/1/0/131070604/midoruzafepuvamesuf.pdf
    • https://cdn.shopify.com/s/files/1/0431/3346/8821/files/marathi_kadambari_online.pdf
    • https://cdn.shopify.com/s/files/1/0431/6574/5314/files/60359078406.pdf
    • https://cdn.shopify.com/s/files/1/0437/8463/4530/files/autosuggestion_anleitung.pdf
    • https://cdn.shopify.com/s/files/1/0441/3331/8808/files/anti_inflammatory_drugs_list.pdf
    • https://cdn.shopify.com/s/files/1/0434/6200/0806/files/fapovusotofikisabogasox.pdf
    • https://cdn.shopify.com/s/files/1/0431/8386/6007/files/74102397789.pdf
    • https://cdn.shopify.com/s/files/1/0428/6342/7751/files/wazuguxogejabovozumifirap.pdf
    • https://cdn.shopify.com/s/files/1/0437/6992/1688/files/goroxerasadadoxofatev.pdf
    • https://cdn.shopify.com/s/files/1/0434/3024/8600/files/cema_belt_conveyors_for_bulk_materials_vol_1_espaol.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vemuvuferakodumi.pdf
    • https://cdn.shopify.com/s/files/1/0429/1185/8855/files/favelegasid.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a320.bin
56d150d4ff34529abcaf462d301189ce2a833c2264a5742810da3711bc2f8872		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA320 5340 bytes
font_01_sfnt_off0000b53c.bin
dd172d93c23cf3179f5790086068a29cf2e61f7ab57afe472de52b564e9727ef		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB53C 10172 bytes
font_02_sfnt_off0000d801.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD801 4324 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.