Malicious PDF — malware analysis report

Static analysis result for SHA-256 1abeb69608791d55…

MALICIOUS

PDF

46.4 KB Created: 2021-05-16 00:04:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: a4ffca60fc3f0f3b1279d7aa3328fcd0 SHA-1: 5c44d8819f9120c91b7fc8c189342eb711d259ee SHA-256: 1abeb69608791d555a9cddef25197b2bdeabb6c819270c3ca421085b733586dd
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that redirect to malicious infrastructure, masquerading as game hacks or generators. The primary malicious URL identified is https://netcdn.xyz/app/406889139/coin-master-village-cost-game-hack. The presence of a 'download button' heuristic further suggests a lure to download potentially malicious content. No scripts were extracted, but the document's structure and embedded links strongly indicate a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

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-village-cost-game-hack In PDF document text
    • https://audev.com/images/free-roblox-intros_GM431946152.pdfIn PDF document text
    • https://www.audev.com/images/master-coin-hack_GM406889139.pdfIn PDF document text
    • https://audev.com/images/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
    • https://www.audev.com/images/free-spins-coin-master-without-survey_GM406889139.pdfIn PDF document text
    • https://www.audev.com/images/free-rare-cards-for-coin-master_GM406889139.pdfIn PDF document text
    • https://audev.com/images/how-to-get-roblox-credit-for-free_GM431946152.pdfIn PDF document text
    • https://audev.com/images/free-shirt-roblox_GM431946152.pdfIn PDF document text
    • https://audev.com/images/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://audev.com/images/how-to-earn-robux-by-playing-games_GM431946152.pdfIn PDF document text
    • https://audev.com/images/john-doe-roblox-hacker_GM431946152.pdfIn PDF document text
    • https://audev.com/images/minecraft-pe-free-ios_GM479516143.pdfIn PDF document text
    • https://www.audev.com/images/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • https://www.audev.com/images/how-to-setup-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • https://www.audev.com/images/minecraft-svg-images-free_GM479516143.pdfIn PDF document text
    • https://audev.com/images/how-to-hack-a-roblox-account-2021_GM431946152.pdfIn PDF document text
    • https://www.audev.com/images/easy-points-gg_GM431946152.pdfIn PDF document text
    • https://audev.com/images/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.audev.com/images/moon-static-coin-master-generator-hacks-free_GM406889139.pdfIn PDF document text
    • https://audev.com/images/free-robux-codes-no-human-verification_GM431946152.pdfIn PDF document text
    • https://audev.com/images/free-robux-now_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004a2e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A2E 28372 bytes
SHA-256: 5fb091eae285dd3212d6a7f4b7d3c79299d687944f17b74d39953b0d88860743
font_01_sfnt_off00008991.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8991 2896 bytes
SHA-256: c1a618813a64314343402b2ec738fc11c4c912460a4c7ae3029924d2f9a229cd
font_02_sfnt_off00009377.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9377 18044 bytes
SHA-256: a8028c0297769aa7dba6e0a54b0a1dc6e5838f70d2f821663f5d8e8c2692d7c8

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