Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c26959e67252fe1…

MALICIOUS

PDF

52.3 KB Created: 2020-08-30 12:14:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 954af2d6331049ed2ade4adb3f881a84 SHA-1: ed56b7b6e97a46750a5d2c3ce38d9f6ff0cb7efa SHA-256: 6c26959e67252fe1b281cbc320614d62575946a811a3a60bfaa5503e7e06977f
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document exhibits characteristics of an advance-fee scam, presenting a lure related to lotteries, prizes, or parcel delivery to trick users into clicking malicious links. The embedded URL, https://ttraff.ru/wix?keyword=bruz+the+chopper+voice+actor, is flagged as a malicious redirector, further supporting the malicious intent. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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.ru/wix?keyword=bruz+the+chopper+voice+actor
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://static.usrfiles.com/ugd/b8c837_f2b0b735e20c4f308f2f9922363ccce6.pdf
    • https://static.usrfiles.com/ugd/b8c837_5c78c70fad444852a6a9f32005c4f8f0.pdf
    • https://static.usrfiles.com/ugd/d2751c_20ff9fd7ff044a0c86afdef03e605c90.pdf
    • https://static.usrfiles.com/ugd/097bd5_1d75d1c2e4a24f5e8d1b0f8589e2a7c9.pdf
    • https://cdn.shopify.com/s/files/1/0433/5419/4070/files/madagascar_movie_series.pdf
    • https://cdn.shopify.com/s/files/1/0432/2007/4663/files/8668830713.pdf
    • https://cdn.shopify.com/s/files/1/0440/7368/1061/files/33674683036.pdf
    • https://static.usrfiles.com/ugd/55f640_16225c0e88d1430faee8bf171b2352be.pdf
    • https://static.usrfiles.com/ugd/3aee12_f2e6ab36c4e844bdbae538c3c4cd1132.pdf
    • https://static.usrfiles.com/ugd/b8c837_57978bbb18fc40db95180635c483c4db.pdf
    • https://cdn.shopify.com/s/files/1/0431/1747/8039/files/edmonton_police_report_request.pdf
    • https://cdn.shopify.com/s/files/1/0435/9022/1983/files/motamukofiko.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_off00008f8a.bin
198b4308443f969dec7fad898bd2a5c66ff712320ea9988b98bd5fc2a2399329
pdf-font-stream PDF embedded font (sfnt) at offset 0x8F8A 4968 bytes
font_01_sfnt_off0000a07c.bin
3e94fbd03e286b7e6531b70e55175f01824a90381e77244a00cea66cefc682b9
pdf-font-stream PDF embedded font (sfnt) at offset 0xA07C 10484 bytes