Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d971608fe2e3c9a…

MALICIOUS

PDF

46.6 KB Created: 2020-09-09 19:51:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c0226beb63382933e5453396f8df9eee SHA-1: 448fbbb3b873f8c375f9a5ac06cd48a174558698 SHA-256: 3d971608fe2e3c9a0ae4ae571cf1498d832f5da95c3981f02fc61e84aaf0658f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains multiple heuristics indicating malicious redirection and a link farm. The document body, though heavily obfuscated, contains a URL that matches one of the extracted malicious links. The presence of a 'MFA / one-time-code harvesting lure' heuristic suggests the intent is to phish for credentials or session tokens. The primary malicious URL identified is https://ttraff.club/pify?keyword=smart+assessor+app.

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.
  • MFA / one-time-code harvesting lure high SE_MFA_LURE
    Document asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
  • 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/pify?keyword=smart+assessor+app
    • http://tosavidaf.theresajatko.com/uploads/1/3/1/0/131069934/8901281.pdf
    • http://xajetubuj.saltydogtactical.com/uploads/1/3/1/8/131857419/a9f75de4593.pdf
    • http://files.belindabucknell.com/uploads/1/3/1/3/131378975/tiborejotaxis.pdf
    • http://tegopem.grangerlandrfd.com/uploads/1/3/2/7/132741100/43a2b5bff.pdf
    • https://static.usrfiles.com/ugd/575363_d9fa279dc77545b7b4e881c3a8ad08ee.pdf
    • https://static.usrfiles.com/ugd/6cf392_12bf6ed8536b4396b266cf8e463c3a00.pdf
    • https://static.usrfiles.com/ugd/7041e4_9cc275c9b78c470283d10fc9da78e651.pdf
    • https://static.usrfiles.com/ugd/11f207_1d570b3a3dec40f2b1050080c95786b5.pdf
    • https://static.usrfiles.com/ugd/7ea8bb_0e4a0b407dc849628bc876aa284f2e20.pdf
    • https://static.usrfiles.com/ugd/191a6d_57120a4cf1754830936de286619e71e1.pdf
    • https://static.usrfiles.com/ugd/6116da_9d04e760046f4216a5ab0e31dca33978.pdf
    • https://static.usrfiles.com/ugd/b8c837_021dee25c95341489ef6f70a4491334d.pdf
    • https://static.usrfiles.com/ugd/c0b427_d4680483e34544f59aa6663fda75a259.pdf
    • https://static.usrfiles.com/ugd/cb2bed_04fa02e3ec4942e58f5c4d5c60a332ed.pdf
    • https://static.usrfiles.com/ugd/41f880_bcaec4a3525f43a190e93096fff0caf5.pdf
    • https://static.usrfiles.com/ugd/b8c837_6aae4917859e4932aac2d8b100caaea6.pdf
    • https://static.usrfiles.com/ugd/229b11_76ed29915ad0417cb66c065ee1510f80.pdf
    • https://static.usrfiles.com/ugd/ea78e0_8c551df383844dd281ffe094e373cdf9.pdf
    • https://static.usrfiles.com/ugd/a3b54b_282a0a659513454fae72934861c4038a.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://static.usrfiles.com/ug

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000078ed.bin
6468e9b403bf35d67b0581fb258b6ac96af3dc66eedb1c4c507c32bcef84841e
pdf-font-stream PDF embedded font (sfnt) at offset 0x78ED 5036 bytes
font_01_sfnt_off000089f0.bin
5cd9cf35c314df273809efecc1378965710ce09dc275b7c140f18e81c7905bc8
pdf-font-stream PDF embedded font (sfnt) at offset 0x89F0 10340 bytes