Malicious PDF — malware analysis report

Static analysis result for SHA-256 497db848d05b8483…

MALICIOUS

PDF

43.2 KB Created: 2020-08-30 01:47:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f2b8662b774bb645cbd1a63add11538a SHA-1: 75fe39291e952a4a2e15fb8ac7803e70d0d42bfe SHA-256: 497db848d05b84832c5704f4e92f5499e1d76f89522b1676f842cef3ee243d5a
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.club'. This indicates an attempt to direct the user to a malicious site. The document body, though heavily obfuscated, also contains this URL. The presence of a PDF link farm heuristic further suggests a malicious intent to distribute links, likely for phishing or malware distribution. No scripts were extracted from this sample.

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.club/wix?keyword=fallout+4+can+provisioners+die
    • https://cdn.shopify.com/s/files/1/0431/5653/7505/files/sivirunopulepeset.pdf
    • https://cdn.shopify.com/s/files/1/0436/5503/7093/files/berajaladur.pdf
    • https://cdn.shopify.com/s/files/1/0429/3269/9292/files/bms_battery_management_system.pdf
    • https://cdn.shopify.com/s/files/1/0435/2252/3288/files/bunitumititupit.pdf
    • https://static.usrfiles.com/ugd/cac9e4_e8ada190c5e54111b1b61ac526c74aa8.pdf
    • https://static.usrfiles.com/ugd/c345b0_4dad720ddcf04f3eb2f971c5fed64a46.pdf
    • https://static.usrfiles.com/ugd/b8c837_25a6bb1d7c204d19aa612d7f8767dc19.pdf
    • https://static.usrfiles.com/ugd/4117a9_0ba478926a554d91909877dcaac5d0c8.pdf
    • https://static.usrfiles.com/ugd/b8c837_9108937628be4efc98c3d499e9fa7811.pdf
    • https://static.usrfiles.com/ugd/756799_0a74cc184c7d4d1a88eec391a70d876e.pdf
    • https://static.usrfiles.com/ugd/6290de_37acfc5dea8e49a29906b4d93c5a01aa.pdf
    • https://static.usrfiles.com/ugd/b8c837_382e334395aa4a4f8bcb044adaced5c0.pdf
    • https://cdn.shopify.com/s/files/1/0432/3262/4797/files/49393218890.pdf
    • https://cdn.shopify.com/s/files/1/0464/7498/5640/files/ratowowuzevopu.pdf
    • https://cdn.shopify.com/s/files/1/0433/7552/6042/files/lofarugexosimile.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006bb4.bin
ce70bef1903160d961ce5dee2bf0e523f1d1c75ebcb2215c1502575e2775352f
pdf-font-stream PDF embedded font (sfnt) at offset 0x6BB4 5168 bytes
font_01_sfnt_off00007d63.bin
66934af905079236813b548b1e4a01790ca04e16c1ce79986fbd3beed6c84775
pdf-font-stream PDF embedded font (sfnt) at offset 0x7D63 10180 bytes