Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba72be7d03a77526…

MALICIOUS

PDF

38.2 KB Created: 2020-08-07 23:30:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 83bdae1803807709ba48c01463fdc102 SHA-1: 35ab35f0c24e0da5c4aeacd4620882658f9d8a39 SHA-256: ba72be7d03a775261664296df06730433a93a2203ed2e43a887cf598737ec4dd
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one identified as a malicious redirector. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' indicates that the URL https://ttraff.ru/pify?keyword=i+bowed+on+my+knees+and+cried+holy+chords+pdf is part of known malicious infrastructure. Additionally, the 'PDF_SEO_LINK_FARM' heuristic suggests a large number of external links, many pointing to Shopify domains, which is a common tactic for SEO poisoning or distributing malicious content. The document body itself is heavily obfuscated and contains the malicious URL, reinforcing the redirection attempt.

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=i+bowed+on+my+knees+and+cried+holy+chords+pdf
    • http://files.escottdesigner.com/uploads/1/3/1/3/131380045/96dac2.pdf
    • http://files.gleesonreboots.com/uploads/1/3/0/8/130814043/wafivozuwika_xomom_wusarixo.pdf
    • http://files.matthewgsheppard.com/uploads/1/3/0/8/130813100/robasosujituvej.pdf
    • http://files.beadsintheforest.com/uploads/1/3/1/4/131411539/c648a3e0d1b.pdf
    • https://cdn.shopify.com/s/files/1/0440/2325/1094/files/factorising_quadratic_equations_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0434/6845/6088/files/filmmaker_magazine.pdf
    • https://cdn.shopify.com/s/files/1/0448/1646/6082/files/catia_assembly_design_projects.pdf
    • https://cdn.shopify.com/s/files/1/0431/8196/5461/files/gupekibegij.pdf
    • https://cdn.shopify.com/s/files/1/0437/2630/7480/files/arduino_mega_adk_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0435/4385/5258/files/52994049596.pdf
    • https://cdn.shopify.com/s/files/1/0438/4532/0861/files/53481285557.pdf
    • https://cdn.shopify.com/s/files/1/0437/3757/9674/files/6440979045.pdf
    • https://cdn.shopify.com/s/files/1/0438/6357/2635/files/bubisabevuzudalowawebaji.pdf
    • https://cdn.shopify.com/s/files/1/0430/2825/0781/files/24676598831.pdf
    • https://cdn.shopify.com/s/files/1/0428/8810/2051/files/ford_explorer_parts_diagram.pdf
    • https://cdn.shopify.com/s/files/1/0433/4760/7720/files/saints_row_3_pc_cheats.pdf
    • https://cdn.shopify.com/s/files/1/0432/2417/0664/files/jepexazivevalupifexu.pdf
    • https://cdn.shopify.com/s/files/1/0431/8999/3635/files/broadcast_news_script.pdf
    • https://cdn.shopify.com/s/files/1/0434/1393/0142/files/26203685047.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_off000055df.bin
4f9a0268c76b2b8a8e28eb5b49ed5b61c4f3b90682d5af8bc11da67cc9aef483
pdf-font-stream PDF embedded font (sfnt) at offset 0x55DF 5732 bytes
font_01_sfnt_off00006949.bin
6a262dfc173142ef66ffd2ada3d8cd0d3f075c57fe2e8faa75ffa421e1a72b4e
pdf-font-stream PDF embedded font (sfnt) at offset 0x6949 9984 bytes