Malicious PDF — malware analysis report

Static analysis result for SHA-256 7fe0db97c45e1b94…

MALICIOUS

PDF

51.0 KB Created: 2020-08-12 18:31:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 488cf71eed433b799fb686c3c5a88185 SHA-1: e3d5426c34b349d29ef5aeb0b62ff0c0da550d59 SHA-256: 7fe0db97c45e1b946b7ca514370791bd229731fbc54b0cb5fc8f4d8c0ec2d2a3
128 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.com'. It also exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on Shopify. The document body, though heavily obfuscated, contains the same malicious URL. The presence of a 'download button' heuristic further supports the lure mechanism. The primary intent appears to be redirecting the user to malicious infrastructure.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/wb?keyword=chemical%20kinetics%20cbse%20notes%20pdf
    • http://files.keeshondarchives.co.uk/uploads/1/3/1/1/131164312/metodarejejexopi.pdf
    • http://files.shoulderandhandclinicisleofwight.com/uploads/1/3/0/7/130739308/dopesewewazorozuve.pdf
    • http://files.futurewire.org/uploads/1/3/1/3/131381677/683781.pdf
    • http://files.hpackids.org/uploads/1/3/1/3/131383456/xelawis-lofunuwuni.pdf
    • https://cdn.shopify.com/s/files/1/0432/1699/4466/files/fitudixegefukegojupogi.pdf
    • https://cdn.shopify.com/s/files/1/0427/4746/1788/files/dictionary_of_electronics_and_communication_engineering.pdf
    • https://cdn.shopify.com/s/files/1/0434/8094/0710/files/john_deere_2040_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/5618/4992/files/51007761000.pdf
    • https://cdn.shopify.com/s/files/1/0432/3354/2303/files/sojasofa.pdf
    • https://cdn.shopify.com/s/files/1/0429/8512/8099/files/xojewanap.pdf
    • https://cdn.shopify.com/s/files/1/0453/2862/9915/files/texto_argumentativo_estructura.pdf
    • https://cdn.shopify.com/s/files/1/0435/9880/7202/files/microbiology_in_telugu.pdf
    • https://cdn.shopify.com/s/files/1/0428/2207/4534/files/mechanics_of_materials_gere.pdf
    • https://cdn.shopify.com/s/files/1/0430/2965/9797/files/jukemor.pdf
    • https://cdn.shopify.com/s/files/1/0432/1568/3743/files/fe_to_rf.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_off0000743f.bin
8c0607dffe6299673efc12c92888571129dbbfc8a84f51b2d170e198063c2aee
pdf-font-stream PDF embedded font (sfnt) at offset 0x743F 5408 bytes
font_01_sfnt_off00008673.bin
7688cde65b9aa1f8267e274535e5817e1eb2fb2d5144d959d9ccd1b1073ac422
pdf-font-stream PDF embedded font (sfnt) at offset 0x8673 10352 bytes
font_02_sfnt_off0000aa03.bin
9876d0897ec9c8daf800546b62de215c972fdd6e45e85ac3a8ec620a70dbc6f8
pdf-font-stream PDF embedded font (sfnt) at offset 0xAA03 16128 bytes