Malicious PDF — malware analysis report

Static analysis result for SHA-256 80a689bb231a54b3…

MALICIOUS

PDF

40.7 KB Created: 2020-09-01 04:15:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f7df018bcee96bc64dcb52474a19243c SHA-1: a4151574385845f836853f168c23747eeb252d73 SHA-256: 80a689bb231a54b3c9fa963444623db14c7163578543ccd95e33ad0f81355709
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that point to a known malicious redirector, ttraff.com, which is designed to lead users to malicious content. The document body, though heavily obfuscated, contains text related to 'Autocad plant 3d report designer' and the redirector URL, suggesting a lure for a phishing or scam campaign. The ML classifier also strongly indicated maliciousness.

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/wix?keyword=autocad+plant+3d+report+designer
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/8579/1393/files/17341707654.pdf
    • https://cdn.shopify.com/s/files/1/0460/9182/9412/files/csgo_to_overwatch_sensitivity.pdf
    • https://cdn.shopify.com/s/files/1/0430/5246/6325/files/fexadetamojujewofat.pdf
    • https://cdn.shopify.com/s/files/1/0431/0600/9255/files/gurebaxagufapapabal.pdf
    • https://cdn.shopify.com/s/files/1/0434/1009/6284/files/segekawakagaro.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/danedogorolulefumatexa.pdf
    • https://cdn.shopify.com/s/files/1/0435/5057/2695/files/four_color_personality_test.pdf
    • https://cdn.shopify.com/s/files/1/0434/9073/8328/files/wordly_wise_3000_book_7_answer_key.pdf
    • https://cdn.shopify.com/s/files/1/0431/6545/0389/files/acs_biochemistry_exam.pdf
    • https://cdn.shopify.com/s/files/1/0435/4326/5434/files/xerenexoxig.pdf
    • https://cdn.shopify.com/s/files/1/0439/0558/1211/files/nokawijufevatojovu.pdf
    • https://static.usrfiles.com/ugd/b8c837_9436f4bf0adf43519e33418329dfb0f1.pdf
    • https://static.usrfiles.com/ugd/b5472a_b77fb7f3418c4824b41a0ca47d7d1302.pdf
    • https://static.usrfiles.com/ugd/3f0e57_777f35a06b3846e4b6fc70b15cbf0a90.pdf
    • https://static.usrfiles.com/ugd/b8c837_be3586fe336944eb8ca9e74db2528cfd.pdf
    • https://static.usrfiles.com/ugd/b8c837_82bde895ce6f40999d80045b31ea7c76.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_off00006125.bin
65994030841deacde92dd6d5499af01627d92f45e04673781bd7e560227bd6cc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6125 5392 bytes
font_01_sfnt_off00007390.bin
5d4015836b0d58e6911d32d0e21509208745b96d7af9022251c5f7fda9ea4e73		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7390 10068 bytes

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