Malicious PDF — malware analysis report

Static analysis result for SHA-256 ccea93ff57dd1ae3…

MALICIOUS

PDF

49.5 KB Created: 2020-08-31 05:32:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1d2256733a32ecf4f1188ed35c5b12d7 SHA-1: 189ad91742b4f6086be576a77a28681213a13241 SHA-256: ccea93ff57dd1ae3709d540fecf247201b077a82f0f464c38339b8c315e27b3b
152 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF file was flagged as malicious by multiple heuristics, including a critical finding for a redirector link to 'ttraff.com'. The ML classifier also strongly indicated maliciousness. The document body contains this same malicious URL, suggesting the primary purpose is to redirect the user to a potentially harmful site. No scripts were extracted, limiting further analysis of the payload.

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=%25D0%25B0%25D0%25BD%25D0%25B3%25D0%25BB%25D0%25B8%25D0%25B9%25D1%2581%25D0%25BA%25D0%25B8%25D0%25B9+%25D1%258F%25D0%25B7%25D1%258B%25D0%25BA+4+%25D0%25BA%25D0%25BB%25D0%25B0%25D1%2581%25D1%2581+%25D0%25BE%25D0%25BA%25D1%2581%25D0%25B0%25D0%25BD%25D0%25B0+%25D0%25BA%25D0%25B0%25D1%2580%25D0%25BF%25D1%258E
    • https://cdn.shopify.com/s/files/1/0451/0469/3400/files/maltese_falcon.pdf
    • https://cdn.shopify.com/s/files/1/0435/4513/3215/files/theological_dictionary_old_testament.pdf
    • https://cdn.shopify.com/s/files/1/0429/6137/1290/files/xidiverelasupo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/51108684678.pdf
    • https://cdn.shopify.com/s/files/1/0432/2626/7806/files/hard_math_printable_worksheets.pdf
    • https://static.usrfiles.com/ugd/0789d5_ada50a961d1c417599aa875cfc1843b7.pdf
    • https://cdn.shopify.com/s/files/1/0434/6108/3301/files/wojunebixuneduzavakif.pdf
    • https://cdn.shopify.com/s/files/1/0434/4093/0983/files/zovevoronivezixabumujex.pdf
    • https://cdn.shopify.com/s/files/1/0434/9391/6837/files/biology_form_4_chapter_8_notes.pdf
    • https://cdn.shopify.com/s/files/1/0448/3688/0545/files/carnival_of_venice_paganini.pdf
    • https://static.usrfiles.com/ugd/b8c837_72114670a1974d5293f12dccec51f90e.pdf
    • https://static.usrfiles.com/ugd/c618e9_b22fb7b093a84d99830aa240760ef3f5.pdf
    • https://static.usrfiles.com/ugd/b8c837_0775ccb3b10543b584732e3dc8571d0a.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/1/0429/6137/1

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007385.bin
e38dde769dd03ae74a50d849cc6b61040ec01e2307a25d1770fd8876913f8b47		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7385 5832 bytes
font_01_sfnt_off0000870e.bin
9ef40032f93196a16dfcf84decaf545587d17ca05614cdabd6c8e6525e7d84f6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x870E 15532 bytes

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