Malicious PDF — malware analysis report

Static analysis result for SHA-256 7401994da182a45a…

MALICIOUS

PDF

42.9 KB Created: 2020-08-17 16:15:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a00638364975ece8d7886c2b74aab7dd SHA-1: 44958d8a2bdc40d3bf01e33a33844ebda56567b9 SHA-256: 7401994da182a45a23dad60d199de472d3dde578f91d885044adcda57c0c038c
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link to a known malicious redirector, ttraff.com, which is likely used to obscure the final malicious destination. The document body, though heavily obfuscated, contains the same URL, suggesting it's the primary lure. The presence of numerous other PDF links, many pointing to Shopify, indicates a link farm strategy, likely to improve SEO for the malicious redirector. No scripts were extracted, and the document body's content is not directly indicative of a specific scam type beyond a general lure.

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.com/pify?keyword=us+guided+hip+joint+injection
    • http://files.templargames.com/uploads/1/3/0/7/130775537/puguzolobexojim-sepon-tuwow.pdf
    • http://fiwasifa.alloneocean.org/uploads/1/3/2/3/132302780/2ae9bde7.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0436/5837/9417/files/cursive_handwriting_practice_sheets_for_adults.pdf
    • https://cdn.shopify.com/s/files/1/0432/1384/8733/files/63496776440.pdf
    • https://cdn.shopify.com/s/files/1/0434/2402/2677/files/rasof.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tizerosotusalasebix.pdf
    • https://cdn.shopify.com/s/files/1/0427/5906/1670/files/55779599391.pdf
    • https://cdn.shopify.com/s/files/1/0428/0877/0726/files/calisthenics_programme_debutant.pdf
    • https://cdn.shopify.com/s/files/1/0435/1993/4628/files/wafosoxezawupo.pdf
    • https://cdn.shopify.com/s/files/1/0433/2892/9947/files/damed.pdf
    • https://cdn.shopify.com/s/files/1/0427/6633/6167/files/jumizekipixepixojadexaxi.pdf
    • https://cdn.shopify.com/s/files/1/0431/6705/6028/files/leforaziredawiwibutufemej.pdf
    • https://cdn.shopify.com/s/files/1/0437/1179/1253/files/aws_kinesis_firehose_cloudformation_template.pdf
    • https://cdn.shopify.com/s/files/1/0435/1646/1211/files/crossfit_bodyweight_wod.pdf
    • https://cdn.shopify.com/s/files/1/0432/9262/2998/files/artificial_intelligence_journal.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006af9.bin
a89be40b064061553906c315b285e1598743364166d918873ab73fc59efd7e59		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6AF9 5064 bytes
font_01_sfnt_off00007c34.bin
bcca19a0475a7cc72d95c9aa5bce80c7b7f66d90ad654f73b05b42a99db87200		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C34 10240 bytes

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