Malicious PDF — malware analysis report

Static analysis result for SHA-256 00572983d56dad16…

MALICIOUS

PDF

46.5 KB Created: 2021-06-02 20:34:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 7b40daac6631db9e65a083071f75ea83 SHA-1: 5e923b1a611e464de95924db0e3e3fd6f9fd71d2 SHA-256: 00572983d56dad1619648be56d7340d020aae3cf9f258e5f4bbc52c37c202db7
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external websites, many of which are identified as malicious redirectors or part of a link farm. The document body and heuristic firings indicate a lure for game hacks and free spins, suggesting the intent is to drive traffic to potentially malicious or ad-heavy sites. No scripts were extracted, but the embedded URLs are the primary indicators of malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9748

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 https://netcdn.xyz/app/431946152/free-roblox-stricid-codes-game-hack In PDF document text
    • https://itv-grabungen.de/images/free-modded-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • https://itv-grabungen.de/images/daily-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://itv-grabungen.de/images/avatar-the-last-airbender-roblox_GM431946152.pdfIn PDF document text
    • https://itv-grabungen.de/images/how-to-hack-coin-master-cheat-engine_GM406889139.pdfIn PDF document text
    • https://itv-grabungen.de/images/minecraft-login-free_GM479516143.pdfIn PDF document text
    • https://itv-grabungen.de/images/can-you-download-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://itv-grabungen.de/images/roblox-booga-booga-hack_GM431946152.pdfIn PDF document text
    • https://itv-grabungen.de/images/app-store-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://itv-grabungen.de/images/robuxlove-net-free-robux_GM431946152.pdfIn PDF document text
    • https://itv-grabungen.de/images/coin-master-heaven-free-spins-today_GM406889139.pdfIn PDF document text
    • https://itv-grabungen.de/images/free-robux-no-human-verification-or-survey-or-download-2021_GM431946152.pdfIn PDF document text
    • https://itv-grabungen.de/images/buy-robux-free_GM431946152.pdfIn PDF document text
    • https://itv-grabungen.de/images/get-coin-master-free-spin_GM406889139.pdfIn PDF document text
    • https://itv-grabungen.de/images/how-to-get-free-robux-on-android_GM431946152.pdfIn PDF document text
    • https://itv-grabungen.de/images/free-roblox-website_GM431946152.pdfIn PDF document text
    • https://itv-grabungen.de/images/how-do-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://itv-grabungen.de/images/legitimate-coin-master-free-spins-apk_GM406889139.pdfIn PDF document text
    • https://itv-grabungen.de/images/coin-master-free-spins-and-coins-link-haktuts_GM406889139.pdfIn PDF document text
    • https://itv-grabungen.de/images/free-robux-no-anti-bot-verification_GM431946152.pdfIn PDF document text
    • https://itv-grabungen.de/images/get-free-cards-for-coin-master_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004ed1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4ED1 25804 bytes
SHA-256: 5612ed57551a12a291f5a1de9e0b0ac821f7538e2ac660af242c35eec90456de
font_01_sfnt_off00008903.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8903 2824 bytes
SHA-256: 94c1b019735d7e491765340abe50b2897410e2ec65ecf141c08bd9f2220897c4
font_02_sfnt_off000092b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92B2 18348 bytes
SHA-256: eaf9a5622a510e33ed7afccbe0ea031be7d9f2d3720aebcfebac04068cddce40

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