Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7604003f713e952…

MALICIOUS

PDF

42.6 KB Created: 2020-08-20 14:29:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7c7598324e8dc5b42b592097601e7ba0 SHA-1: f8372e7c34559537841b7e46fbc76c5054420dd3 SHA-256: b7604003f713e952a088a1703dcf270ec5904f94bf6d9049fc121d38c936dae9
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a mass of external links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=hellhounds+osrs+guide', suggesting a lure for users interested in the game 'Old School RuneScape'. The presence of numerous PDF links, many hosted on shopify.com, indicates a link farm designed to distribute malicious content or conduct phishing. No scripts were extracted from this sample.

Heuristics 3

  • 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.
  • 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=hellhounds+osrs+guide
    • http://files.carrie-mason.com/uploads/1/3/2/6/132681352/timinaxigizawekelulo.pdf
    • http://files.vedajess.com/uploads/1/3/0/7/130776142/fexaziletexadir_xavoz.pdf
    • http://files.mindthestep.nl/uploads/1/3/1/3/131378838/5c3cdb167e.pdf
    • http://files.libertyshelties.com/uploads/1/3/2/8/132816202/58eefa.pdf
    • http://files.huntsvilleschoolofkarate.com/uploads/1/3/1/3/131382797/vexamozenavitam_fuduka_lifileni_fijidifevuvev.pdf
    • https://cdn.shopify.com/s/files/1/0437/2093/3528/files/wegipojifugezidupubo.pdf
    • https://cdn.shopify.com/s/files/1/0438/3031/3122/files/xovogexa.pdf
    • https://cdn.shopify.com/s/files/1/0432/7741/8656/files/5855376925.pdf
    • https://cdn.shopify.com/s/files/1/0444/5346/2183/files/credit_risk_analysis_report.pdf
    • https://cdn.shopify.com/s/files/1/0441/4255/9384/files/bakap.pdf
    • https://cdn.shopify.com/s/files/1/0437/2830/6330/files/getixejufejilogivefimo.pdf
    • https://cdn.shopify.com/s/files/1/0428/0736/1703/files/12th_centum_scored_answer_papers_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/walezilufotalenuzodumis.pdf
    • https://cdn.shopify.com/s/files/1/0432/7194/6396/files/48110278143.pdf
    • https://cdn.shopify.com/s/files/1/0429/2483/4982/files/bushings_used_with_electrical_transformers.pdf
    • https://cdn.shopify.com/s/files/1/0428/2915/2423/files/dependent_and_independent_variables_in_statistics.pdf
    • https://cdn.shopify.com/s/files/1/0434/1635/4978/files/xalarukokimud.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_off00006b09.bin
c9822c5177a45c58c552799d367da28eb907ed6ddec454b3e4ec7b30da2be32a
pdf-font-stream PDF embedded font (sfnt) at offset 0x6B09 4840 bytes
font_01_sfnt_off00007b6a.bin
2a9777f519e44905dabdad436f402cd61136fd542f0ad1c3983a8c667e7df442
pdf-font-stream PDF embedded font (sfnt) at offset 0x7B6A 10120 bytes