Malicious PDF — malware analysis report

Static analysis result for SHA-256 7478e982a3f67daf…

MALICIOUS

PDF

39.4 KB Created: 2020-08-31 18:49:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 965522cc4af7c9ab978d77bedd732bad SHA-1: 3a204f2cdf8f7acd55aa7676e03eb795af4ac1b4 SHA-256: 7478e982a3f67daf3be3af13be184428b8bc3d3f21302983edda58b6db52ed1e
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to a known malicious domain, ttraff.com. The document body, though heavily obfuscated, appears to contain keywords related to a hardware guide, suggesting a lure to disguise the malicious intent. The presence of numerous external PDF links further indicates a link farm or redirection strategy.

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=firepower+4110+hardware+guide
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/f3cb45_47e39269a78847c196b00af0bf7d5117.pdf
    • https://static.usrfiles.com/ugd/12daa7_2b2899adfdd143d2987cf2c496e3ad2c.pdf
    • https://static.usrfiles.com/ugd/89c6ad_efff54900af3434d90f4964174e4a3cd.pdf
    • https://static.usrfiles.com/ugd/b8c837_57d8345793724ebf8e47b8b2e268f02e.pdf
    • https://static.usrfiles.com/ugd/a58b01_4241e570299a488eb76138b8ba42ad26.pdf
    • https://static.usrfiles.com/ugd/b8bbd7_48859fd728774501be91d5226b5c1af0.pdf
    • https://static.usrfiles.com/ugd/b8c837_41741e7f48c141b7bf49d0f3b2fdd660.pdf
    • https://static.usrfiles.com/ugd/f96b02_0739a2fc766a4083b032fb60002f1c3c.pdf
    • https://static.usrfiles.com/ugd/b8c837_19351ba1901849da88e26b143cfeac5e.pdf
    • https://static.usrfiles.com/ugd/e4a001_6e9221da71784dd4be9d91f4d1fed6d4.pdf
    • https://static.usrfiles.com/ugd/b8c837_b8e4ae36c5374a73b9f1ceb5e9ffd61c.pdf
    • https://static.usrfiles.com/ugd/e23fbb_45ef71df4daa428293046d70799174ab.pdf
    • https://static.usrfiles.com/ugd/b8c837_9dc96796af0d4b2895c31bd864571d53.pdf
    • https://static.usrfiles.com/ugd/f3ecbe_66fa46675bfb48f8a4208ed4e9a4c7ff.pdf
    • https://static.usrfiles.com/ugd/72b0e7_014a1b82c6534f45980fd8717a28db44.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_off00005bf2.bin
fbf3d3e7d7b9b0aa23bd4f0a67c29b602d528f6f55512159265cab6ff05e1b31
pdf-font-stream PDF embedded font (sfnt) at offset 0x5BF2 5340 bytes
font_01_sfnt_off00006e3b.bin
1367e9e23a046f0a7d4a48f7418e5dcb3a9acd201cf86a436d9a428b6546c95f
pdf-font-stream PDF embedded font (sfnt) at offset 0x6E3B 10184 bytes