Malicious PDF — malware analysis report

Static analysis result for SHA-256 80e8d5cf44ac43d5…

MALICIOUS

PDF

43.2 KB Created: 2021-05-13 13:02:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 0f023ee3a3847cdec7ed0136189246bf SHA-1: c117f07c89530647f0e5efb5ef93b5a1efa98b39 SHA-256: 80e8d5cf44ac43d5563d9d911d1a4814d41f906a763995f84f4b18204cba34f3
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure for game hacks and free currency to trick users into clicking malicious links. The primary link directs to a known malicious redirector infrastructure, which in turn hosts further malicious PDF files. The ML classifier strongly indicates maliciousness, and the presence of multiple redirector links reinforces the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/robux-free-promo-codes-game-hack In PDF document text
    • http://ims-77.fr/images/master-coin-hack-apk_GM406889139.pdfIn PDF document text
    • http://ims-77.fr/images/master-coin-free-spin-daily_GM406889139.pdfIn PDF document text
    • http://ims-77.fr/images/7-year-old-roblox_GM431946152.pdfIn PDF document text
    • http://ims-77.fr/images/free-robux-on-phone_GM431946152.pdfIn PDF document text
    • http://ims-77.fr/images/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://ims-77.fr/images/coin-master-400-spin-link-hack_GM406889139.pdfIn PDF document text
    • http://ims-77.fr/images/minecraft-bedrock-download-pc-free_GM479516143.pdfIn PDF document text
    • http://ims-77.fr/images/coins-master_GM406889139.pdfIn PDF document text
    • http://ims-77.fr/images/coin-master-twitter_GM406889139.pdfIn PDF document text
    • http://ims-77.fr/images/coin-master-free-coins-link-2021_GM406889139.pdfIn PDF document text
    • http://ims-77.fr/images/legitimate-coin-master-free-spins-apk_GM406889139.pdfIn PDF document text
    • http://ims-77.fr/images/moonactive-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://ims-77.fr/images/free-robux-accounts_GM431946152.pdfIn PDF document text
    • http://ims-77.fr/images/free-robux-gift-card-generator_GM431946152.pdfIn PDF document text
    • http://ims-77.fr/images/free-minecraft-coloring-pages_GM479516143.pdfIn PDF document text
    • http://ims-77.fr/images/coin-master-free-spins-link-2021-no-verification-deutsch_GM406889139.pdfIn PDF document text
    • http://ims-77.fr/images/free-robux-giveaway_GM431946152.pdfIn PDF document text
    • http://ims-77.fr/images/hacked-roblox-accounts-list_GM431946152.pdfIn PDF document text
    • http://ims-77.fr/images/free-spin-codes-coin-master_GM406889139.pdfIn PDF document text
    • http://ims-77.fr/images/free-2021-robux_GM431946152.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
stream_003_off00004916.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4916 28480 bytes
SHA-256: e6ed9ded3a096b237141a17af73323e5ae6feefaa2ca8559af648ab649cc4c73
font_01_sfnt_off0000859a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x859A 18604 bytes
SHA-256: 72370e69d4b3437de95b76ada03da26e1fdb3d0ee534a059885e6f785b63064d

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