Malicious PDF — malware analysis report

Static analysis result for SHA-256 982b63a090df0382…

MALICIOUS

PDF

46.8 KB Created: 2020-08-01 19:52:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: db988c29652e73e0c3f4a79de4709071 SHA-1: 16c63f64854f6c67731f6231bae6925c765cc1f0 SHA-256: 982b63a090df0382f41d42d092a27330096ece9c3448a18b8e181acd07fd6667
152 Risk Score

Malware Insights

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

The PDF was flagged as malicious due to a large number of embedded links, many of which point to a redirector service. The primary malicious URL identified is https://ttraff.cc/pify?keyword=transcending+the+nine+heavens+wiki, which likely serves as a gateway to further malicious content. The document body contains garbled text and references to the wkhtmltopdf tool, suggesting it was generated programmatically to host these links.

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.cc/pify?keyword=transcending+the+nine+heavens+wiki
    • http://files.carrollhospitalmetz.com/uploads/1/3/2/6/132681698/f2d2db743cf8cf.pdf
    • http://files.spinesurgerycleveland.com/uploads/1/3/1/4/131408581/8e316c1df0a5614.pdf
    • http://files.sarabarati.com/uploads/1/3/1/0/131071289/b289ac.pdf
    • http://files.elsvandeweyer.com/uploads/1/3/2/7/132741322/kuvuvevuk-wefel-digaforogemex.pdf
    • https://cdn.shopify.com/s/files/1/0430/9676/8661/files/tinizelutewejokin.pdf
    • https://cdn.shopify.com/s/files/1/0433/3151/8622/files/lupijiginuxijav.pdf
    • https://cdn.shopify.com/s/files/1/0431/5276/9192/files/34973441476.pdf
    • https://cdn.shopify.com/s/files/1/0436/0221/5074/files/72885236132.pdf
    • https://cdn.shopify.com/s/files/1/0431/6089/5650/files/26629795451.pdf
    • https://cdn.shopify.com/s/files/1/0440/0067/3950/files/dekijeriwexes.pdf
    • https://cdn.shopify.com/s/files/1/0433/4977/0408/files/lafugerugiwilesir.pdf
    • https://cdn.shopify.com/s/files/1/0433/9020/6119/files/53660678446.pdf
    • https://cdn.shopify.com/s/files/1/0428/3206/8775/files/94307436951.pdf
    • https://cdn.shopify.com/s/files/1/0431/4395/4594/files/17674008605.pdf
    • https://cdn.shopify.com/s/files/1/0430/4293/0842/files/bejujozutaxuzofef.pdf
    • https://cdn.shopify.com/s/files/1/0428/0313/4627/files/47698979207.pdf
    • https://cdn.shopify.com/s/files/1/0434/7609/1032/files/6617003635.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006af7.bin
548887133a910211c2a0844cbc7a69cec4bd8f31774632104937f8324f825bc4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6AF7 3440 bytes
font_01_sfnt_off00007726.bin
6daad35980bf484e5b3ea3fa230f9cb6c36a1daec7cb2ce776afb02e033e3eee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7726 5336 bytes
font_02_sfnt_off00008953.bin
731b4c3bed498c664219d5d79eb2659dd8354a8c4ae7f5c94cbc5d3d6af2bd1e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8953 10156 bytes

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