Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa85e44e3f91984f…

MALICIOUS

PDF

42.6 KB Created: 2021-05-13 08:26:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-11
MD5: a82812579bfddf073e253b6f30846821 SHA-1: 727889e0a8b8fafc5c011efea1ef587ae10c8e34 SHA-256: aa85e44e3f91984f825d9b86f066f8ff7094db7f626d7b4e0a5be0a49e7b8d3d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, disguised as "free generator" or "game hack" lures. These links likely lead to further malicious content or phishing pages. Although no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a malicious intent to redirect users to harmful websites, likely as part of a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/479516143/how-to-get-minecraft-for-free-on-xbox-game-hack In PDF document text
    • http://iedarelief.us/images/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://iedarelief.us/images/how-to-make-a-minecraft-pe-server-for-free_GM479516143.pdfIn PDF document text
    • http://iedarelief.us/images/how-can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://iedarelief.us/images/coin-master-hack-uk_GM406889139.pdfIn PDF document text
    • http://iedarelief.us/images/how-to-get-real-robux_GM431946152.pdfIn PDF document text
    • http://iedarelief.us/images/best-free-robux-sites_GM431946152.pdfIn PDF document text
    • http://iedarelief.us/images/free-robux-android_GM431946152.pdfIn PDF document text
    • http://iedarelief.us/images/100-free-spins-coin-master-link_GM406889139.pdfIn PDF document text
    • http://iedarelief.us/images/unlimited-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://iedarelief.us/images/free-robux-reddit_GM431946152.pdfIn PDF document text
    • http://iedarelief.us/images/free-robux-app_GM431946152.pdfIn PDF document text
    • http://iedarelief.us/images/2021-coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • http://iedarelief.us/images/how-to-play-coin-master_GM406889139.pdfIn PDF document text
    • http://iedarelief.us/images/roblox-person_GM431946152.pdfIn PDF document text
    • http://iedarelief.us/images/minecraft-pe-free-download-ios-no-jailbreak_GM479516143.pdfIn PDF document text
    • http://iedarelief.us/images/free-spins-coin-master-cheats_GM406889139.pdfIn PDF document text
    • http://iedarelief.us/images/get-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://iedarelief.us/images/can-i-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://iedarelief.us/images/coin-master-3rd-village-free-2021-gift-card_GM406889139.pdfIn PDF document text
    • http://iedarelief.us/images/minecraft-auto-miner-hack_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_off00004ad8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AD8 24940 bytes
SHA-256: f4b4ba91bf34e39bdb7e3476e410838b91206f51f2400c35d1742ea688d37517
font_01_sfnt_off000083b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83B8 18472 bytes
SHA-256: 63446f7755945d37ec8b97d22fda434cb08cbf4c61a02f7f94d2af605f03b611

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