Malicious PDF — malware analysis report

Static analysis result for SHA-256 0cdb790016c90026…

MALICIOUS

PDF

45.6 KB Created: 2021-05-31 17:10:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: a2b03731c290df897047752ba60c3bbc SHA-1: 577d55546adcbb7b8e27d2a260951ba2bf4426ee SHA-256: 0cdb790016c900264c159c96f029aae2991fbc0574c08e16c05a588c08502b84
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. 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 0.9864

Heuristics 4

  • 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.
  • 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.xyz/app/431946152/free-skateboarding-game-on-roblox-game-hack PDF link annotation
    • https://zbych-pol.pl/wp-content/uploads/fsqm-files/how-to-get-free-followers-on-tiktok_GM835599320.pdfIn PDF document text
    • https://zbych-pol.pl/wp-content/uploads/fsqm-files/minecraft-classic-free_GM479516143.pdfIn PDF document text
    • https://zbych-pol.pl/wp-content/uploads/fsqm-files/hack-tiktok-fans-free_GM835599320.pdfIn PDF document text
    • https://zbych-pol.pl/wp-content/uploads/fsqm-files/free-tiktok-app_GM835599320.pdfIn PDF document text
    • https://zbych-pol.pl/wp-content/uploads/fsqm-files/minecraft-pe-free-ios_GM479516143.pdfIn PDF document text
    • https://zbych-pol.pl/wp-content/uploads/fsqm-files/free-tiktok-comments_GM835599320.pdfIn PDF document text
    • https://zbych-pol.pl/wp-content/uploads/fsqm-files/seraph-roblox-hack-download_GM431946152.pdfIn PDF document text
    • https://zbych-pol.pl/wp-content/uploads/fsqm-files/haktuts-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • https://zbych-pol.pl/wp-content/uploads/fsqm-files/is-minecraft-free-on-xbox_GM479516143.pdfIn PDF document text
    • https://zbych-pol.pl/wp-content/uploads/fsqm-files/coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • https://zbych-pol.pl/wp-content/uploads/fsqm-files/free-roblox-hack_GM431946152.pdfIn PDF document text
    • https://zbych-pol.pl/wp-content/uploads/fsqm-files/free-falling-roblox-codes_GM431946152.pdfIn PDF document text
    • https://zbych-pol.pl/wp-content/uploads/fsqm-files/coin-master-hacks_GM406889139.pdfIn PDF document text
    • https://zbych-pol.pl/wp-content/uploads/fsqm-files/free-minecraft-accounts-reddit_GM479516143.pdfIn PDF document text
    • https://zbych-pol.pl/wp-content/uploads/fsqm-files/how-to-get-minecraft-pe-for-free_GM479516143.pdfIn PDF document text
    • https://zbych-pol.pl/wp-content/uploads/fsqm-files/minecraft-download-free-download_GM479516143.pdfIn PDF document text
    • https://zbych-pol.pl/wp-content/uploads/fsqm-files/how-to-get-free-robux-2021-easy_GM431946152.pdfIn PDF document text
    • https://zbych-pol.pl/wp-content/uploads/fsqm-files/how-to-get-free-robux-for-kids_GM431946152.pdfIn PDF document text
    • https://zbych-pol.pl/wp-content/uploads/fsqm-files/free-tiktok-fans-no-verification_GM835599320.pdfIn PDF document text
    • https://zbych-pol.pl/wp-content/uploads/fsqm-files/how-to-get-free-robux-no-survey-no-offers_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_004_off00005015.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5015 25956 bytes
SHA-256: 060a9253ce9226bcfbe8c2c6b6e523e7fc5159f74e4800752305d400b96ff674
font_01_sfnt_off00008c92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C92 19292 bytes
SHA-256: 70e46ed5be9e509a457323c7964de3e1b3cb915b6a08eba5ba71bd0ac2cc886b

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