Malicious PDF — malware analysis report

Static analysis result for SHA-256 3de13a61c74d3bc9…

MALICIOUS

PDF

34.9 KB Created: 2021-07-03 14:46:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 2bf98b3b79c995f209bb9306ebc6fbaf SHA-1: 0db90bbeac993403585dc51a8316385e604c4a74 SHA-256: 3de13a61c74d3bc9a10ca7c89af45316668e29711d7f05363763b5443bd68e99
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous links designed to lure users into clicking on what appear to be game-related hacks or generators. The primary link redirects to a known malicious infrastructure, indicating a phishing or scam attempt. The document body and heuristics confirm the intent to drive traffic to these malicious URLs, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • 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.
  • 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.tw/app/431946152/how-to-get-free-robux-com-game-hack In PDF document text
    • http://library.apsidoarjo.ac.id/repository/ihacker-space-de-remove-space-free-robux-obc-2021_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-long-good-roblox-names_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-rare-cards-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/roblox-free-no-sign-up_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/how-to-get-free-robux-no-survey_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/how-to-make-a-roblox-scam-website-free_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/free-spin-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/orewards-com-free-robux_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-2021-robux-code_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/www-roblox-com-cheat-in-no-survey_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/everything-for-free-in-roblox_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/hack-in-counter-blox-roblox_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id//repository/coin-master-mod-apk-2021_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-robux-limited_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/best-roblox-free-clothes_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/the-quarry-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/coin-master-free-link-spin_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/synapse-roblox-free-download-2021_GM431946152.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/game-hunters-coin-master_GM406889139.pdfIn PDF document text
    • http://library.apsidoarjo.ac.id/repository/free-robux-ultimate-gamer-365-new_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_off000031d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31D2 22112 bytes
SHA-256: 6bf2aaa7a1845b5d4047014a730c72c3d2b385a8c9d72c3afc22ad54db8c6699
font_01_sfnt_off000062eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62EB 19244 bytes
SHA-256: 2a82a6b4e88d45175d2fe2eaf287537d274cffbbed35dd56f8b6e767c09dfc54

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