Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a7a100d9bc72b92…

MALICIOUS

PDF

33.3 KB Created: 2021-06-18 12:23:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 84161fe66e49239df70732575a2e66eb SHA-1: 5531677fbdf13284a0f9d6f4f8e3523e4d982b3b SHA-256: 6a7a100d9bc72b92f241125c15efb3d3ea4123c2d3232e8e92f478a200e9c7a3
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and lures users with promises of free game currency or hacks. The document body and extracted URLs strongly suggest a social engineering campaign aimed at tricking users into visiting malicious sites. The presence of embedded URLs and the ML classifier's high confidence score support this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/how-to-free-robux-game-hack In PDF document text
    • http://bogatyr.com/images/redeem-roblox-card-free_GM431946152.pdfIn PDF document text
    • http://bogatyr.com/images/roblox-real-hack-robux_GM431946152.pdfIn PDF document text
    • http://bogatyr.com/images/easy-games-to-hack-on-roblox_GM431946152.pdfIn PDF document text
    • http://bogatyr.com/images/free-robux-generator-without-verification_GM431946152.pdfIn PDF document text
    • http://bogatyr.com/images/free-spin-hack-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://bogatyr.com/images/robux-free-co_GM431946152.pdfIn PDF document text
    • http://bogatyr.com/images/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://bogatyr.com/images/john-doe-hacked-roblox_GM431946152.pdfIn PDF document text
    • http://bogatyr.com/images/how-to-get-free-tiktok-coins_GM835599320.pdfIn PDF document text
    • http://bogatyr.com/images/coin-master-hack-https-coinms-net_GM406889139.pdfIn PDF document text
    • http://bogatyr.com/images/coin-master-free-coins-cheat_GM406889139.pdfIn PDF document text
    • http://bogatyr.com/images/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://bogatyr.com/images/best-site-for-free-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://bogatyr.com/images/free-minecraft-skin-packs_GM479516143.pdfIn PDF document text
    • http://bogatyr.com/images/free-roblox-gift-card-codes-codes_GM431946152.pdfIn PDF document text
    • http://bogatyr.com/images/how-to-get-free-snacks-in-coin-master_GM406889139.pdfIn PDF document text
    • http://bogatyr.com/images/create-minecraft-server-free_GM479516143.pdfIn PDF document text
    • http://bogatyr.com/images/roblox-group-free-robux_GM431946152.pdfIn PDF document text
    • http://bogatyr.com/images/dragon-ball-x-roblox-hack-pc_GM431946152.pdfIn PDF document text
    • http://bogatyr.com/images/android-coin-master-3433-apk-hack_GM406889139.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
font_00_sfnt_off00002e3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E3A 21772 bytes
SHA-256: 194e3486fa2f61bbf7752ae81e854148585a72fb77344a13294519c509a14b1d
font_01_sfnt_off00005e2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E2E 18696 bytes
SHA-256: 1b58f3b54c7cdb6ffc3db76ab4d0015679079ed3d5cd5e9e8aa9a817e1bdf87b

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