Malicious PDF — malware analysis report

Static analysis result for SHA-256 8feef1110bdb622e…

MALICIOUS

PDF

41.1 KB Created: 2021-05-30 01:48:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-14
MD5: c467923c60f14d5cecfe28528b04ac76 SHA-1: 3c5d9bfb076555fbae8917c2d52c376bf7aff254 SHA-256: 8feef1110bdb622e45e10e295b4c9942df6a629c79c6987031dd6fd89a9c7758
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to websites offering game hacks and generators, identified as malicious redirectors. The document body and embedded artifacts suggest a lure for users seeking in-game advantages, which is a common social engineering tactic. The presence of embedded URLs and the ML classifier further support the malicious classification.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7407

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/406889139/coin-master-free-spin-and-coins-links-2021-game-hack In PDF document text
    • https://brsolutions.pl/wp-content/uploads/fsqm-files/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://brsolutions.pl/wp-content/uploads/fsqm-files/free-coin-master-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://brsolutions.pl/wp-content/uploads/fsqm-files/bux-life-free-robux_GM431946152.pdfIn PDF document text
    • https://brsolutions.pl/wp-content/uploads/fsqm-files/free-minecraft-alts_GM479516143.pdfIn PDF document text
    • https://brsolutions.pl/wp-content/uploads/fsqm-files/adopt-me-roblox-hacks_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off000035b1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x35B1 26444 bytes
SHA-256: c0f2fe3ea2111b93980bdabc2b11c66625830e2ccbe91646ace6a52b29a96619
font_01_sfnt_off000072f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72F7 3400 bytes
SHA-256: 4b3e0f36ad1e0c7e3ea5c178fd2b4f097d1e01575fc6a4101a8b520db34dfe07
font_02_sfnt_off00007e20.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E20 18632 bytes
SHA-256: bf450557b00699bdc36230f8bff75cef2d4ddc3329c11821453b6bd8c7be45f9

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