Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1952f90de4492a0…

MALICIOUS

PDF

71.3 KB Created: 2020-08-28 15:47:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9b25df0f8e4c8256a03e1760c47609a9 SHA-1: 2a670b3cac9ac100be2f5eea5ac79d75a4959292 SHA-256: f1952f90de4492a0b3822bb7d14570ebb7c31ec3f688b38489cee1559b8d1fe8
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains numerous embedded links, with a critical heuristic firing indicating a link to known malicious redirector infrastructure at https://ttraff.ru/pify?keyword=pentagram+ritual+pdf. Another critical heuristic identified a PDF link farm, with the first URL pointing to a benign Shopify domain but suggesting a broader malicious infrastructure. The ML classifier strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains the malicious URL and appears to be a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=pentagram+ritual+pdf
    • http://kanofuf.uniontownartclub.org/uploads/1/3/0/7/130739974/c38b0dcec15636.pdf
    • http://files.rohsalgebra2.com/uploads/1/3/1/3/131380623/28a559954e8.pdf
    • http://kuvumakon.paolasoccer.org/uploads/1/3/1/4/131453247/zagelepevo-luxifetamukajig.pdf
    • http://vifedemu.tylieshider.com/uploads/1/3/0/9/130969742/gusabeliwomimu.pdf
    • https://cdn.shopify.com/s/files/1/0465/4704/2462/files/glasgow_caledonian_university_postgraduate_application_form.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/81159011373.pdf
    • https://cdn.shopify.com/s/files/1/0432/5956/0094/files/minecraft_skin_template_1._8.pdf
    • https://cdn.shopify.com/s/files/1/0430/5059/8562/files/alif_novel_episode_10_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/2411/3049/files/how_to_get_to_socrethar_the_eternal.pdf
    • https://cdn.shopify.com/s/files/1/0432/2610/3971/files/20229454338.pdf
    • https://cdn.shopify.com/s/files/1/0440/9176/8984/files/ace_banking_and_static_awareness_boo.pdf
    • https://cdn.shopify.com/s/files/1/0452/8082/1410/files/principles_of_auditing_textbook.pdf
    • https://cdn.shopify.com/s/files/1/0429/6704/0154/files/fumorewogovu.pdf
    • https://cdn.shopify.com/s/files/1/0427/9618/7815/files/73389739201.pdf
    • https://cdn.shopify.com/s/files/1/0432/3442/7047/files/95144823074.pdf
    • https://cdn.shopify.com/s/files/1/0430/8844/5604/files/jadajujunodowukoban.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/
    • https://cdn.shopify.com/s/files/1/0432/5

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c661.bin
97a3281ecf6118f6cb8ba137cace6819160bd860597dc96e2d2580159d6c2086
pdf-font-stream PDF embedded font (sfnt) at offset 0xC661 5184 bytes
font_01_sfnt_off0000d7ee.bin
07dabc6890ee0d1ac8e94cabbbe7c06f51b5b52fe48c70652bd3f5e7d1c4246b
pdf-font-stream PDF embedded font (sfnt) at offset 0xD7EE 10472 bytes
font_02_sfnt_off0000fb40.bin
51b8d4c4f17389d80b23040d591c0dccb099bca9103ea84f58116e310badbe13
pdf-font-stream PDF embedded font (sfnt) at offset 0xFB40 16088 bytes