Malicious PDF — malware analysis report

Static analysis result for SHA-256 ecdef3108ecdb541…

MALICIOUS

PDF

35.6 KB Created: 2021-06-21 16:25:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: ddf0bc6f287ba86a86731dd7672530d6 SHA-1: 95248722942e1599004433d40f5c31898cd8cbec SHA-256: ecdef3108ecdb5417886e4a08b7a8ae629ef79fbab1583ddc2ea2ff462fbafc8
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of free game hacks and currency to trick users into clicking malicious links. The primary link directs to a known malicious redirector infrastructure, which in turn serves further malicious PDF documents. The document body and embedded URLs strongly suggest a phishing or scamming attempt, likely to lead users to credential harvesting or malware download sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/how-to-change-your-roblox-name-for-free-2021-game-hack In PDF document text
    • http://reggieslockandkey.com/images/free-robux-websites-that-actually-work_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/free-robux-for-kids-no-verification_GM431946152.pdfIn PDF document text
    • http://reggieslockandkey.com/images/work-at-pizza-place-roblox-hack_GM431946152.pdfIn PDF document text
    • http://reggieslockandkey.com/images/how-to-hack-a-person-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/how-do-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://reggieslockandkey.com/images/roblox-wall-hack-2021_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/how-to-get-free-robux-without-verifying_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/coin-master-free-daily-spins-link_GM406889139.pdfIn PDF document text
    • https://reggieslockandkey.com/images/free-roblox-bear-mask-wear_GM431946152.pdfIn PDF document text
    • http://reggieslockandkey.com/images/coin-master-free-coins-and-spins-app_GM406889139.pdfIn PDF document text
    • http://reggieslockandkey.com/images/how-to-get-free-robux-for-kids_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/how-can-you-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://reggieslockandkey.com/images/how-to-get-a-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/free-pokemon-go-accounts-level-35_GM1094591345.pdfIn PDF document text
    • https://reggieslockandkey.com/images/roblox-ultimate-driving-cheat_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/roblox-free-500-robux_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/can-you-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://reggieslockandkey.com/images/roblox-lawsuit_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/how-to-change-roblox-username-for-free_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/roblox-hacked-face-id_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
font_00_sfnt_off0000331f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x331F 21972 bytes
SHA-256: 117c64d3817659d12698dcf723042c281806c4830a419c07375623ddd6d75d92
font_01_sfnt_off00006385.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6385 19944 bytes
SHA-256: d2dc04e8e0a7645ab4aa6350b315d7935398c97f6a8d4ddac9a56b4eedc100f3

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