Malicious PDF — malware analysis report

Static analysis result for SHA-256 43b844ba68e1c3ee…

MALICIOUS

PDF

33.2 KB Created: 2021-06-21 04:09:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 89728d21d08a55a91d439a446d41ab70 SHA-1: aece0835ec235835fe095a1e70a4d2c93cf16248 SHA-256: 43b844ba68e1c3eece19c6e75621654394cc0d506b289d7f5f305bd89becfa7a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of free in-game currency and hacks for popular games like Roblox and Coin Master. It contains multiple embedded URLs that lead to malicious redirectors and further PDF files, indicating a chain of malicious content delivery. The ML classifier and heuristic firings strongly suggest malicious intent, likely to direct users to phishing 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/free-rs-999-999-999-on-roblox-game-hack In PDF document text
    • http://technologicalsc.com/images/gain-robux-free_GM431946152.pdfIn PDF document text
    • http://technologicalsc.com/images/is-coin-master-free_GM406889139.pdfIn PDF document text
    • http://technologicalsc.com/images/roblox-hack-version-free-download_GM431946152.pdfIn PDF document text
    • http://technologicalsc.com/images/free-robux-instantly_GM431946152.pdfIn PDF document text
    • http://technologicalsc.com/images/best-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://technologicalsc.com/images/coin-master-hack-apk-download-latest-version_GM406889139.pdfIn PDF document text
    • http://technologicalsc.com/images/roblox-lcoins-hack_GM431946152.pdfIn PDF document text
    • http://technologicalsc.com/images/coin-master-free-spins-daily-fb-champion_GM406889139.pdfIn PDF document text
    • http://technologicalsc.com/images/coin-master-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://technologicalsc.com/images/counter-blox-roblox-offensive-wall-hacks-2021_GM431946152.pdfIn PDF document text
    • http://technologicalsc.com/images/roblox-ultimate-driving-trucker-money-hack_GM431946152.pdfIn PDF document text
    • http://technologicalsc.com/images/roblox-hack-2021-get-free-robux_GM431946152.pdfIn PDF document text
    • http://technologicalsc.com/images/roblox-best-looking-free-avatar_GM431946152.pdfIn PDF document text
    • http://technologicalsc.com/images/hack-roblox-exploit-2021_GM431946152.pdfIn PDF document text
    • http://technologicalsc.com/images/roblox-com-free-play_GM431946152.pdfIn PDF document text
    • http://technologicalsc.com/images/who-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://technologicalsc.com/images/apps-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://technologicalsc.com/images/free-robux-real-working_GM431946152.pdfIn PDF document text
    • http://technologicalsc.com/images/websites-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://technologicalsc.com/images/roblox-free-download-for-tablet_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_off00002dbb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DBB 21664 bytes
SHA-256: 3b03e0fc28c0d5c52a9da3becefc6bc9dc0c3ce8ffc286fa300eec30dc5d2f7a
font_01_sfnt_off00005d4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D4D 18812 bytes
SHA-256: 89945c6977a24b994f8b3b1021f34844f0d7d063976d2575f4e82ffe4066ae16

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