Malicious PDF — malware analysis report

Static analysis result for SHA-256 f60a68702cd8de14…

MALICIOUS

PDF

46.4 KB Created: 2021-05-13 21:34:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-16
MD5: a33c89359cbbf55e517e8b8ad2433d2d SHA-1: 32e7e42fb401e54e652699cb8d0881b8797142fd SHA-256: f60a68702cd8de14d0e3d916f3ecb2cf152ea4ed2d2c393bd7e3efebc3a6389c
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links to external sites, including a malicious redirector and an SEO link farm, designed to lure users into downloading potentially malicious content related to games and hacks. The document body and embedded links suggest a phishing or scam attempt, likely distributed as a spearphishing attachment. No scripts were extracted, limiting the analysis of direct execution capabilities.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8696

Heuristics 5

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/479516143/minecraft-windows-10-mod-menu-game-hack In PDF document text
    • http://junktiquecollector.com/images/free-robux-glitch-2021_GM431946152.pdfIn PDF document text
    • http://junktiquecollector.com/images/coin-master-hack-2021-apk_GM406889139.pdfIn PDF document text
    • http://junktiquecollector.com/images/coin-master-rewards-app_GM406889139.pdfIn PDF document text
    • http://junktiquecollector.com/images/minecraft-java-server-hosting-free_GM479516143.pdfIn PDF document text
    • http://junktiquecollector.com/images/how-to-get-free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • http://junktiquecollector.com/images/how-to-hack-coin-master-game-2021_GM406889139.pdfIn PDF document text
    • http://junktiquecollector.com/images/free-spin-hack-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://junktiquecollector.com/images/free-spins-on-coin-master-link_GM406889139.pdfIn PDF document text
    • http://junktiquecollector.com/images/hack-coin-master-apk-mod_GM406889139.pdfIn PDF document text
    • http://junktiquecollector.com/images/real-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://junktiquecollector.com/images/how-to-hack-coin-master-android_GM406889139.pdfIn PDF document text
    • http://junktiquecollector.com/images/avatar-the-last-airbender-roblox_GM431946152.pdfIn PDF document text
    • http://junktiquecollector.com/images/how-to-get-free-robux-for-real_GM431946152.pdfIn PDF document text
    • http://junktiquecollector.com/images/coin-master-how-to-get-free-pet-food_GM406889139.pdfIn PDF document text
    • http://junktiquecollector.com/images/free-coin-and-spin-for-coin-master_GM406889139.pdfIn PDF document text
    • http://junktiquecollector.com/images/get-free-robux-now_GM431946152.pdfIn PDF document text
    • http://junktiquecollector.com/images/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • http://junktiquecollector.com/images/haktuts-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://junktiquecollector.com/images/coin-master-apk-mod-free-download_GM406889139.pdfIn PDF document text
    • http://junktiquecollector.com/images/how-to-get-free-robux-hack-2021_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_off00004ca9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4CA9 26376 bytes
SHA-256: f9bf149383ce82a85db7cfa9e98b3e8d2beffa81714d2c3bef67ee2036f6ffa7
font_01_sfnt_off0000878f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x878F 2892 bytes
SHA-256: c2578a292634a901613c1dd9f9883dd4930e6811e59ae03d696f263e56ea17b4
font_02_sfnt_off00009179.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9179 18664 bytes
SHA-256: d514bf315b41fa54fe0c50a97b4da26b79196549822ea3c6d635b98116ec41ec

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