Malicious PDF — malware analysis report

Static analysis result for SHA-256 21f017f7fa1d95f5…

MALICIOUS

PDF

75.3 KB Created: 2020-08-24 03:41:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4afcd79455fbf66dfc2c81efc15e3a4b SHA-1: 8af95348a088864c03699fc911ba8a0eef5690a0 SHA-256: 21f017f7fa1d95f599a5a874038a92263371979c9125ad786837cfbc31c9a4c7
136 Risk Score

Malware Insights

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

The PDF file contains a lure related to debt collection and recovery, combined with urgency language. It embeds multiple links, with one identified as a malicious redirector pointing to 'ttraff.ru'. The file also contains a link farm of 18 PDF documents hosted on Shopify, suggesting an attempt to manipulate search engine results or distribute further content. No scripts were extracted from this sample.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=debt+collection+guidelines+and+recovery
    • http://files.handyman-arc.net/uploads/1/3/2/6/132681560/fusutix.pdf
    • http://senasotox.mrtrombetta.com/uploads/1/3/1/4/131437623/banumavuwowatujipa.pdf
    • http://nusokur.isuprssa.com/uploads/1/3/1/4/131407089/4299037.pdf
    • http://wilugapix.hartmanholistic.com/uploads/1/3/0/8/130814328/352cc63.pdf
    • http://labujeb.keyosguideservice.com/uploads/1/3/1/4/131453780/gozejo.pdf
    • https://cdn.shop
    • https://cdn.shopify.com/s/files/1/0429/9731/7783/files/90232271534.pdf
    • https://cdn.shopify.com/s/files/1/0427/4785/5004/files/parenteral_anticoagulation_chest_guidelines.pdf
    • https://cdn.shopify.com/s/files/1/0433/0291/2158/files/84779733213.pdf
    • https://cdn.shopify.com/s/files/1/0429/6278/0311/files/81968730001.pdf
    • https://cdn.shopify.com/s/files/1/0433/8676/5475/files/48800125476.pdf
    • https://cdn.shopify.com/s/files/1/0431/1816/6167/files/75050525705.pdf
    • https://cdn.shopify.com/s/files/1/0437/8624/0162/files/sutagawipetofaxa.pdf
    • https://cdn.shopify.com/s/files/1/0429/6772/8279/files/crystal_reports_training_near_me.pdf
    • https://cdn.shopify.com/s/files/1/0429/8863/4263/files/42798976472.pdf
    • https://cdn.shopify.com/s/files/1/0429/1916/6119/files/65728272604.pdf
    • https://cdn.shopify.com/s/files/1/0432/5638/1597/files/jujakese.pdf
    • https://cdn.shopify.com/s/files/1/0437/3685/8775/files/79924883183.pdf
    • https://cdn.shopify.com/s/files/1/0432/5038/5051/files/faxamifuduv.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_off0000e76b.bin
2e55ff3d7b28348f933262ec8a2a7680677bd7083185043da99e8331d7a09702
pdf-font-stream PDF embedded font (sfnt) at offset 0xE76B 5408 bytes
font_01_sfnt_off0000f9e2.bin
47cf5f271a4c2f609f531fe1effb8a0ee9219492dbd7885835dac8ea1b427af1
pdf-font-stream PDF embedded font (sfnt) at offset 0xF9E2 10916 bytes