Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f9ccdf049a4aeda…

MALICIOUS

PDF

36.0 KB Created: 2021-05-23 02:39:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 95077dc599e0a7855bb974cd8d41622a SHA-1: 40dbc87f04047522754d61c8856f6211c698d222 SHA-256: 1f9ccdf049a4aeda491589f902a9d35f5c762c3efd2af8cbf34d919eb38728b2
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and lures users with promises of free in-game items. The primary link redirects to 'free-tiktok-likes-no-human-verification-or-downloading-apps-game-hack', which is associated with malicious infrastructure. The document body and heuristics indicate a phishing or scam attempt designed to drive traffic to these malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://netcdn.xyz/app/835599320/free-tiktok-likes-no-human-verification-or-downloading-apps-game-hack In PDF document text
    • http://ggmtc.net/userfiles/files/free-robux-now_GM431946152.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/daily-free-spins_GM406889139.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/roblox-scam_GM431946152.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/roblox-free-printables_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off0000306d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x306D 24256 bytes
SHA-256: 30b13bdb65435141107835f37343ffbd7245914ffb2e73bc10704d32ed33214f
font_01_sfnt_off0000682f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x682F 19260 bytes
SHA-256: 26817b4cedfa85687dbcd5cd5fe0b6768af480ef1d18351329c732120202e544

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