Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a2b0d8ac32fe826…

MALICIOUS

PDF

34.1 KB Created: 2021-06-26 04:26:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 0ae78d1c00568d56fd42b83ef9671114 SHA-1: aa192df529a7467180a106e95e41e1231dedbe77 SHA-256: 1a2b0d8ac32fe826cfa2836a101b9479c35a002b4988eb691c0c8b92d094a0f9
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous links to external websites, many of which are structured as SEO-optimized PDF documents designed to farm traffic. The primary lure appears to be 'free game hacks' for popular games like Roblox and Coin Master, aiming to redirect users to malicious or scam content. The ML classifier strongly indicated maliciousness, supporting the assessment of a phishing or scam campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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/free-exotic-hack-roblox-assanis-game-hack PDF link annotation
    • http://digilib.ulm.ac.id/pusat/repository/coin-master-free-spins-and-coins-daily_GM406889139.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/roblox-hack-for-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/how-to-hack-aimbot-in-breaking-point-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/how-to-cheat-andget-things-that-cost-robux-without-robux_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/how-to-get-more-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/roblox-hack-script-vehicle-simulator-infinite-money-script-free_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/free-coin-master-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/how-to-get-free-principal-on-roblox-high-school-2_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/roblox-spielen-pc-free_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/hack-coin-master-android-2021_GM406889139.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/free-robux-without-survey_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/free-terminated-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/how-to-cheat-theme-park-tycoon-2-on-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/roblox-packages-free_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/windows-10-minecraft-free-with-java_GM479516143.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/coin-master-hack-app-link_GM406889139.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/obby-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/coin-master-hack-app-2021_GM406889139.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/hack-coin-master-using-pc_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002f7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F7B 22000 bytes
SHA-256: 8a069927668d7677d1b2e0c12315efa8d172302622755b1776784e6e03ac8f7b
font_01_sfnt_off00006027.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6027 19044 bytes
SHA-256: ae89ea4cba3f60efaf1e37f9562cc222661689597fdb30aff25b13328651f8a8

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