Malicious PDF — malware analysis report

Static analysis result for SHA-256 da0794d9a2872128…

MALICIOUS

PDF

62.1 KB Created: 2020-08-20 12:44:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e78011191a9c5ce53d19f06d789afe81 SHA-1: 636c83128d507f051efba7915869eab67cfa45f4 SHA-256: da0794d9a2872128a6e684fcbffa5ef6e731503d541db5345decda081d51082a
154 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.ru'. The document body, though heavily obfuscated, contains this URL and other Shopify links, suggesting a link farm or redirection tactic. The primary intent appears to be directing the user to the malicious 'ttraff.ru' URL, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=lindsey+stirling+sheet+music
    • http://files.ashaskitchens.com/uploads/1/3/1/4/131409794/dfa8ba1f.pdf
    • http://gagusuku.timkentart.com/uploads/1/3/1/4/131438216/fixosa-tifadu-dijogafobuwa.pdf
    • http://files.theberchmansinitiative.org/uploads/1/3/1/4/131437839/wodekijidabofe-toxupekuvi-divova.pdf
    • https://cdn.shopify.com/s/files/1/0434/4627/2162/files/38191350964.pdf
    • https://cdn.shopify.com/s/files/1/0436/5221/9030/files/ensayo_sobre_el_feudalismo.pdf
    • https://cdn.shopify.com/s/files/1/0455/3582/1989/files/5525760614.pdf
    • https://cdn.shopify.com/s/files/1/0437/4275/7029/files/sawisipufigo.pdf
    • https://cdn.shopify.com/s/files/1/0434/1497/8718/files/41802054223.pdf
    • https://cdn.shopify.com/s/files/1/0430/0144/6551/files/d_d_xanathar.pdf
    • https://cdn.shopify.com/s/files/1/0433/5032/7455/files/appendices_in_a_report_sample.pdf
    • https://cdn.shopify.com/s/files/1/0435/7508/3171/files/organizational_culture_survey_questionnaire.pdf
    • https://cdn.shopify.com/s/files/1/0429/6821/9799/files/pupukemojoriwujorera.pdf
    • https://cdn.shopify.com/s/files/1/0440/3996/2774/files/96739833787.pdf
    • https://cdn.shopify.com/s/files/1/0430/7776/3226/files/5614398223.pdf
    • https://cdn.shopify.com/s/files/1/0435/6335/2227/files/65206157769.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008079.bin
5ce502e56cc26c7b232c315f4518b4194dff051aa17fdc4503199fd667f21a2f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8079 3964 bytes
font_01_sfnt_off00008e7e.bin
1b7ecd798a1cdbd202065e94728473d63422df5705e07861fe2fa7724b249c1d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8E7E 5184 bytes
font_02_sfnt_off00009ff3.bin
6fe090a5bbbeb7b3f4dcc2aa2deb49595f7b975fd6d2e2bdc792f682994b9128		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9FF3 17312 bytes
font_03_sfnt_off0000d62b.bin
46d9b83afd797048ab251ddfc9ca9a6db44f3280724c231f6a80a061bcc6fc12		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD62B 16120 bytes

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