Malicious PDF — malware analysis report

Static analysis result for SHA-256 6021bb2947c6352f…

MALICIOUS

PDF

33.4 KB Created: 2021-06-25 12:16:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: ff9e04206e23357170216ded99db39f3 SHA-1: 69da7f4403fd49fdcd798c36ec110429e315df03 SHA-256: 6021bb2947c6352f27863f7d6af4e427ac08b174a2f9788eb351ed73ea117d36
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document is designed as a lure, presenting itself as a guide to hacking games like Roblox and Coin Master. It contains a large number of links, likely to a link farm, that redirect to pages promising cheats or generators. The primary intent appears to be driving traffic to malicious websites, potentially for credential harvesting or malware distribution, leveraging a 'free generator' or 'game hack' pretext.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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 http://netcdn.co/app/431946152/how-to-hack-roblox-players-acounts-game-hack PDF link annotation
    • http://apotema.com.co/ufiles/files/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • http://apotema.com.co/ufiles/files/how-to-become-a-hacker-in-roblox_GM431946152.pdfIn PDF document text
    • http://apotema.com.co/ufiles/files/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://apotema.com.co/ufiles/files/coin-master-hack-com_GM406889139.pdfIn PDF document text
    • http://apotema.com.co/ufiles/files/how-to-get-a-cape-in-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://apotema.com.co/ufiles/files/how-to-hack-roblox-apocalypse-rising-2021_GM431946152.pdfIn PDF document text
    • http://apotema.com.co/ufiles/files/coin-master-hack-2021-app_GM406889139.pdfIn PDF document text
    • http://apotema.com.co/ufiles/files/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
    • http://apotema.com.co/ufiles/files/mosttechs-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://apotema.com.co/ufiles/files/how-to-get-free-hair-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://apotema.com.co/ufiles/files/roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://apotema.com.co/ufiles/files/coin-master-pet-food-hack_GM406889139.pdfIn PDF document text
    • http://apotema.com.co/ufiles/files/pubg-uc-usa_GM1330123889.pdfIn PDF document text
    • http://apotema.com.co/ufiles/files/how-to-get-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://apotema.com.co/ufiles/files/http-bitly-coin-master-free-2021-spins_GM406889139.pdfIn PDF document text
    • http://apotema.com.co/ufiles/files/mcpe_GM479516143.pdfIn PDF document text
    • http://apotema.com.co/ufiles/files/coin-master-free-spins-app-android_GM406889139.pdfIn PDF document text
    • http://apotema.com.co/ufiles/files/coin-master-free-spins-link-facebook-page_GM406889139.pdfIn PDF document text
    • http://apotema.com.co/ufiles/files/levvvel-coin-master_GM406889139.pdfIn PDF document text
    • http://apotema.com.co/ufiles/files/roblox-robux-hack-with-required-password_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
font_00_sfnt_off00002a88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2A88 22332 bytes
SHA-256: 5f5d6d4dda44ecc969b9924eac11cd62542f9aed6e403db5c936910b9bafae49
font_01_sfnt_off00005c60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C60 19396 bytes
SHA-256: 95deff91bf4426595f827d0b0379c38711c29acb0c4d9d1c89195557f54883e2

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