Malicious PDF — malware analysis report

Static analysis result for SHA-256 848ef4202b0c3699…

MALICIOUS

PDF

47.5 KB Created: 2021-06-11 03:27:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 16f1a8dd49b8fcd879de6563142d7cc4 SHA-1: a657f7522789b0c87152c18ee06b0b9ed69e4839 SHA-256: 848ef4202b0c36998bdff8483d71607430e56317849708b5d949b518af938a16
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. It uses a callback-phone (TOAD) lure. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

Heuristics 5

  • PDF links to a 'free generator / game hack' redirector high 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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.tw/app/431946152/how-to-glitch-to-a-free-event-item-in-roblox-game-hack PDF link annotation
    • http://library.forda-mof.org/katalog/repository/roblox-jailbreak-airdrop-hack_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/best-free-roblox-outfits_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-minecraft-skins-ps4_GM479516143.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/how-to-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/roblox-exploit-super-nice-mml-hacks_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-robux-reddit_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-minecraft-account_GM479516143.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/minecraft-free-download-laptop_GM479516143.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-hack-root_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/how-to-hack-and-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-robux-codes-2021-not-used_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-coin-master-spins-no-human-verification_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-roblox-accounts-with-robux-that-work-not-banned-2021_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-robux-on-iphone_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/how-to-get-real-robux_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/minecraft-com-free_GM479516143.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/minecraft-free-computer-game_GM479516143.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/coin-master-link-app_GM406889139.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-robux-that-actually-works-2021_GM431946152.pdfIn PDF document text
    • http://library.forda-mof.org/katalog/repository/free-spins-for-coin-master-that-work_GM406889139.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004ef1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4EF1 24904 bytes
SHA-256: 6a8263be838ce7ca7b7ef82d6b17f531a34c46700f83fc2202fe76252f295dc8
font_01_sfnt_off0000881d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x881D 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_02_sfnt_off0000952e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x952E 18876 bytes
SHA-256: 4bf612a876f5c370485aedaf69fd3c35b41dc4f76585d5b5250742d351e82377

Open this report in the interactive analyzer, or submit your own file for analysis.