Malicious PDF — malware analysis report

Static analysis result for SHA-256 80ffa467cd7cee80…

MALICIOUS

PDF

42.5 KB Created: 2021-05-16 10:56:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 5ae5065f48421d9698b8c8cc3886b4b5 SHA-1: 55e787bab0fe4ccb4ccb2c5315d411600038477e SHA-256: 80ffa467cd7cee802a24ecfa8640a2f476a40776caa4a45818f480862670cdd1
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to a redirector URL, which is associated with malicious activity and lures users with promises of game hacks. The document body, though partially corrupted, also contains references to the same malicious URL. The presence of these links and the lure content strongly suggest a phishing or malware distribution attempt.

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/406889139/coin-master-hacked-apk-download-for-android-game-hack In PDF document text
    • http://www.bzconstructionservices.com/images/free-minecraft-capes-no-mods_GM479516143.pdfIn PDF document text
    • http://www.bzconstructionservices.com/images/coin-master-hack-spins-free_GM406889139.pdfIn PDF document text
    • http://www.bzconstructionservices.com/images/coin-master-free-spin-and-coins-fbid-links_GM406889139.pdfIn PDF document text
    • http://www.bzconstructionservices.com/images/www-free-robux-com_GM431946152.pdfIn PDF document text
    • http://www.bzconstructionservices.com/images/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.bzconstructionservices.com/images/body-roblox_GM431946152.pdfIn PDF document text
    • http://www.bzconstructionservices.com/images/free-robux-for-kids_GM431946152.pdfIn PDF document text
    • http://www.bzconstructionservices.com/images/how-to-get-roblox-premium-for-free_GM431946152.pdfIn PDF document text
    • http://www.bzconstructionservices.com/images/free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://www.bzconstructionservices.com/images/rbx-free-robux_GM431946152.pdfIn PDF document text
    • http://www.bzconstructionservices.com/images/free-robux-websites-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • http://www.bzconstructionservices.com/images/minecraft-fly-hack_GM479516143.pdfIn PDF document text
    • http://www.bzconstructionservices.com/images/coin-master-daily-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://www.bzconstructionservices.com/images/how-many-free-spin-links-is-there-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.bzconstructionservices.com/images/how-can-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.bzconstructionservices.com/images/how-to-get-infinite-robux_GM431946152.pdfIn PDF document text
    • http://www.bzconstructionservices.com/images/free-robux-hack-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://www.bzconstructionservices.com/images/coinmaster-free-spins-link_GM406889139.pdfIn PDF document text
    • http://www.bzconstructionservices.com/images/roblox-hacked-version-download_GM431946152.pdfIn PDF document text
    • http://www.bzconstructionservices.com/images/you-promised-my-son-free-robux_GM431946152.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_off000048af.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48AF 26032 bytes
SHA-256: edfe44f4d194db9d935abd9da14858ba171e28b3e27e863f0219e9ae5f16d0ae
font_01_sfnt_off000082b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82B5 18636 bytes
SHA-256: 87f24663a42dd6b293392c347e04cdb733edd0a8e3460407db1e5d5abad0db8a

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