Malicious PDF — malware analysis report

Static analysis result for SHA-256 33a1a184ed02dcca…

MALICIOUS

PDF

34.5 KB Created: 2021-06-30 11:41:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 0d05d5471dfdb8e4f81783073f21718d SHA-1: 716e2ad121dab32e02016f09e5c9cc2b430bf1dd SHA-256: 33a1a184ed02dcca435eea51e3ec43bbcff96dfe160c7766bd6a4544a45eac36
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of free game currency and hacks to trick users into clicking malicious links. The primary link directs to a known malicious redirector infrastructure, which in turn serves further malicious PDFs. The document body contains multiple URLs pointing to similar scam content, indicating a phishing or scam campaign.

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/how-to-get-free-robux-no-downloading-games-game-hack In PDF document text
    • http://xenonsvjetla.com/files/coin-master-level-4_GM406889139.pdfIn PDF document text
    • http://xenonsvjetla.com/files/roblox-hack-no-downloading-games_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/how-to-get-any-roblox-item-for-free-2021_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/how-to-get-free-robux-on-ipad-real_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/how-to-hack-into-walls-in-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/free-spins-coin-master-links-blogspot_GM406889139.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/how-to-get-free-robux-no-scam_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/how-to-get-a-cape-in-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://xenonsvjetla.com/files/how-to-get-free-catalog-items-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/coin-master-free-daily-rewards_GM406889139.pdfIn PDF document text
    • http://xenonsvjetla.com/files/how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/free-roblox-bc-code-generator_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/coin-master-hack-spins-apk-download_GM406889139.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/instant-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://xenonsvjetla.com/files/how-to-get-free-robux-videos_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/accessory-hat-ashs-hat-on-roblox-free_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/roblox-hacked-version-download_GM431946152.pdfIn PDF document text
    • https://www.xenonsvjetla.com/files/claimrbx-free-robux_GM431946152.pdfIn PDF document text
    • http://xenonsvjetla.com/files/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 7

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_off00002e84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E84 22056 bytes
SHA-256: 1aba8a88cdeaa4b258be48cd4e8161fdba6d47f2359a6f34c2fb290ee49b5cdc
font_01_sfnt_off00005f8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F8E 19780 bytes
SHA-256: a9cd89c695cfa72a16a5f47d3aa6203de5df9d8070fa122ad5b09e0cde788867

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