Malicious PDF — malware analysis report

Static analysis result for SHA-256 a1743c1de5ef430b…

MALICIOUS

PDF

35.5 KB Created: 2021-07-06 08:27:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: edc087d8b6fa68ab233eb27cc3f98097 SHA-1: 984932e04cf71aaafb36db0c9a1228cc7afd504c SHA-256: a1743c1de5ef430ba0b4b9d30af4da4b99ba235e86190d48244c37a75c13373c
160 Risk Score

Malware Insights

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

The PDF document employs a lure related to game hacking and free generators, directing users to a known malicious redirector. This suggests an attempt to trick users into visiting malicious websites, likely for further exploitation or malware delivery. While no scripts were explicitly extracted, the PDF structure and embedded links strongly indicate a malicious intent to redirect users to potentially harmful content.

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.tw/app/406889139/how-to-hack-coin-master-ios-jailbreak-game-hack In PDF document text
    • http://lib.fisipumt.ac.id/repository/enter-code-for-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-daily-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/800-robux-free-pub_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/all-free-xbox-roblox-skins_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/coin-master-hack-apk-2021_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/hack-roblox-flood-escape-2_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/island-life-paradise-hack-script-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/freespinandcoin-blogspot_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/cute-free-roblox-outfits_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/minecraft-life-hacks_GM479516143.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/real-working-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/bloxawards-com-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-do-you-get-free-robux-on-roblox-on-ipad_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-free-rare-knife-effect-twitter_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-become-a-hacker-in-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-robux-discord_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-how-to-get-free-robux-using-inspect-element_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-jailbreak-hack-application-free_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-laser-tanks-20-cheats_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/roblox-bloxburg-hack_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
stream_002_off00003235.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3235 23440 bytes
SHA-256: 8f09731043535e1b2595a57aa806697cd2364a5c884fb92bf9aba1d004fbd95d
font_01_sfnt_off00006733.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6733 18564 bytes
SHA-256: 93c5f09ed49a64bd3339ac691ee5f88aee00b9e7a85e0b0b0901e6c59d799170

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