Malicious PDF — malware analysis report

Static analysis result for SHA-256 69735b22eef033df…

MALICIOUS

PDF

55.5 KB Created: 2021-06-02 20:37:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 02382d5184456e69f010ed3cc63f7f18 SHA-1: 25e4d1319f6b045627d28f41af317edd1b4cec23 SHA-256: 69735b22eef033dfe09e9421941390cc65e31b0e09f671a77e9b43ae56f01cb9
122 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 LOLBin command-execution 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 0.9649

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.
  • LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
    Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
  • 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/how-to-get-free-robux-without-human-verification-on-iphone-game-hack PDF link annotation
    • http://www.dach-bud.poznan.pl/wp-content/uploads/fsqm-files/minecraft-realms-free_GM479516143.pdfIn PDF document text
    • http://www.dach-bud.poznan.pl/wp-content/uploads/fsqm-files/roblox-download-free-for-pc-full-game_GM431946152.pdfIn PDF document text
    • http://www.dach-bud.poznan.pl/wp-content/uploads/fsqm-files/beyond-roblox-speed-hacks_GM431946152.pdfIn PDF document text
    • http://www.dach-bud.poznan.pl/wp-content/uploads/fsqm-files/minecraft-java-edition-free_GM479516143.pdfIn PDF document text
    • http://www.dach-bud.poznan.pl/wp-content/uploads/fsqm-files/roblox-hack_GM431946152.pdfIn PDF document text
    • http://www.dach-bud.poznan.pl/wp-content/uploads/fsqm-files/roblox-scripting-free-help_GM431946152.pdfIn PDF document text
    • http://www.dach-bud.poznan.pl/wp-content/uploads/fsqm-files/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.dach-bud.poznan.pl/wp-content/uploads/fsqm-files/how-to-hack-someone-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.dach-bud.poznan.pl/wp-content/uploads/fsqm-files/how-to-hack-youre-account-back-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.dach-bud.poznan.pl/wp-content/uploads/fsqm-files/no-survey-anti-bots-allowed-robux-hacker_GM431946152.pdfIn PDF document text
    • http://www.dach-bud.poznan.pl/wp-content/uploads/fsqm-files/roblox-console-hack_GM431946152.pdfIn PDF document text
    • http://www.dach-bud.poznan.pl/wp-content/uploads/fsqm-files/no-key-free-exploit-roblox_GM431946152.pdfIn PDF document text
    • http://www.dach-bud.poznan.pl/wp-content/uploads/fsqm-files/new-roblox-hack-30-cmds-injection-jailbreakdll-2021_GM431946152.pdfIn PDF document text
    • http://www.dach-bud.poznan.pl/wp-content/uploads/fsqm-files/how-to-hack-roblox-prison-life-on-chromebook_GM431946152.pdfIn PDF document text
    • http://www.dach-bud.poznan.pl/wp-content/uploads/fsqm-files/how-to-get-free-robux-2021-no-survey_GM431946152.pdfIn PDF document text
    • http://www.dach-bud.poznan.pl/wp-content/uploads/fsqm-files/minecraft-for-free-on-phone_GM479516143.pdfIn PDF document text
    • http://www.dach-bud.poznan.pl/wp-content/uploads/fsqm-files/cheat-engine-for-roblox-2021_GM431946152.pdfIn PDF document text
    • http://www.dach-bud.poznan.pl/wp-content/uploads/fsqm-files/hack-tiktok-fans-free_GM835599320.pdfIn PDF document text
    • http://www.dach-bud.poznan.pl/wp-content/uploads/fsqm-files/coin-master-free-spins-and-coins-daily_GM406889139.pdfIn PDF document text
    • http://www.dach-bud.poznan.pl/wp-content/uploads/fsqm-files/how-robux-for-free_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000055f7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x55F7 29412 bytes
SHA-256: 0505e8743836ff44ea963c2132a21bf6234cb663b3603c2783d967c603fa852f
font_01_sfnt_off00009a90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A90 7420 bytes
SHA-256: 0b188308ab0e7ffce9913d63d697a586f2937cafc51a771db38e3a566cd37e24
font_02_sfnt_off0000b300.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB300 19564 bytes
SHA-256: 9185396d7d600dc27db9a73cd4d4d5003b252f5734addf9cbdf40bf811534043

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