Malicious PDF — malware analysis report

Static analysis result for SHA-256 6341d6fe85794060…

MALICIOUS

PDF

40.8 KB Created: 2021-05-10 14:36:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-07-10
MD5: c5b939c5add089bc0deea9b897a754c1 SHA-1: e17cb06dd3b1b6a57bc53c03709c93f48c38b1a3 SHA-256: 6341d6fe85794060ad120ca629c0f56159daf017b882b20bcc32cafcce045097
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors and game hack lures, specifically targeting 'Roblox' and 'Coin Master' game cheats. The primary malicious link directs users to 'https://netcdn.xyz/app/431946152/roblox-army-free-robux-game-hack', which is likely a phishing or malware distribution site. The document's structure and embedded links suggest an attempt to lure users into downloading potentially harmful content or visiting malicious websites under the guise of game-related benefits.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9945

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/431946152/roblox-army-free-robux-game-hack In PDF document text
    • http://standart-lab.ru/images/coin-master-game-hack-app_GM406889139.pdfIn PDF document text
    • http://standart-lab.ru/images/village-4-coin-master_GM406889139.pdfIn PDF document text
    • http://standart-lab.ru/images/easy-ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://standart-lab.ru/images/free-robux-codes-no-human-verification_GM431946152.pdfIn PDF document text
    • http://standart-lab.ru/images/free-robux-generator-2021-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://standart-lab.ru/images/get-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://standart-lab.ru/images/minecraft-coins-free_GM479516143.pdfIn PDF document text
    • http://standart-lab.ru/images/roblox-troll-outfits-free_GM431946152.pdfIn PDF document text
    • http://standart-lab.ru/images/how-to-get-minecraft-for-free-on-phone_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00003da6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3DA6 27304 bytes
SHA-256: f5506ecf19b48a4049cbee89a1904ac3d36133b3473a26fbe30accc0260f9f2c
font_01_sfnt_off00007d2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D2A 18528 bytes
SHA-256: 3fb3182e9b0518fecce2d6326c4443e9fc052433b5a2fc23416796f92e2510b3