Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9e5f66a247ca3a4…

MALICIOUS

PDF

44.7 KB Created: 2020-08-19 20:49:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 91994867a73f132902747faa6a261c74 SHA-1: 813b1e07975ba32be970da0467c3c5139e296537 SHA-256: a9e5f66a247ca3a4f4d41c6e876e396323b2cfec6ee0e152a72318c0fdf1609e
148 Risk Score

Malware Insights

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

The PDF contains multiple embedded URLs, with one identified as a malicious redirector. The document body, though heavily obfuscated, contains text that appears to be a lure, referencing 'miya bhai video tinyjuke' and including the malicious redirector URL. Additionally, heuristics indicate the presence of a link farm and a callback lure, suggesting a phishing or scam attempt. The primary malicious URL identified is https://ttraff.ru/pify?keyword=miya+bhai+video++tinyjuke.

Heuristics 5

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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.ru/pify?keyword=miya+bhai+video++tinyjuke
    • http://files.richardsunderlandart.com/uploads/1/3/2/8/132814050/05e1ddb2d33.pdf
    • http://files.colorfulstrokesca.com/uploads/1/3/2/6/132695258/397d59fd546ed.pdf
    • https://cdn.shopify.com/s/files/1/0431/9834/9471/files/11841204854.pdf
    • https://cdn.shopify.com/s/files/1/0433/0602/5128/files/rukig.pdf
    • https://cdn.shopify.com/s/files/1/0434/4214/3397/files/lenzie_meadow_primary_school_inspection_report.pdf
    • https://cdn.shopify.com/s/files/1/0437/3915/2535/files/dijedadotubavebisegete.pdf
    • https://cdn.shopify.com/s/files/1/0432/1509/3917/files/hueso_calcaneo_anatomia.pdf
    • https://cdn.shopify.com/s/files/1/0435/3651/5224/files/49749172078.pdf
    • https://cdn.shopify.com/s/files/1/0435/2029/5064/files/bapatazimigusipawiga.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xoxolesusoziviro.pdf
    • https://cdn.shopify.com/s/files/1/0431/5630/8123/files/zoxetarubudewari.pdf
    • https://cdn.shopify.com/s/files/1/0434/0059/3557/files/11551868253.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_off000060b0.bin
e84848548e0878201190650a9d0c877d8ba5fdccbe9c5fbaef4678aa39eb2c61
pdf-font-stream PDF embedded font (sfnt) at offset 0x60B0 5056 bytes
font_01_sfnt_off000071ee.bin
24567bd70095bacf3b35bd39c45519486dce26aa9c9ec2032dd2c20701db39a4
pdf-font-stream PDF embedded font (sfnt) at offset 0x71EE 4952 bytes
font_02_sfnt_off00007f9e.bin
fe44ef59c7e5e289364ac05a826dac2238cd988b85e41b00e7410bd45154c1ba
pdf-font-stream PDF embedded font (sfnt) at offset 0x7F9E 10772 bytes