Malicious PDF — malware analysis report

Static analysis result for SHA-256 aff8b5bb296df602…

MALICIOUS

PDF

35.2 KB Created: 2021-06-19 15:05:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: b322e5c159ab37870bc4ff9a78b1407f SHA-1: 53ae12ccc4844339d8c2f616440406e2e07c26ad SHA-256: aff8b5bb296df60238767cd3cd5c17e8313cc73cdb6e3ffecc33e7bd6174a4cc
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that lead to a known malicious redirector infrastructure, specifically designed to lure users with promises of game hacks and currency. The document body and heuristic firings confirm the intent to redirect users to potentially harmful content, likely for further exploitation or credential harvesting. No scripts were extracted, but the embedded URLs and redirector lures are strong indicators of malicious intent.

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-do-i-get-free-robux-tix-and-obc-lifetime-game-hack In PDF document text
    • http://lamascheradiferro.dk/images/cheats-for-doengeon-quest-in-roblox_GM431946152.pdfIn PDF document text
    • http://lamascheradiferro.dk/images/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://lamascheradiferro.dk/images/free-coins_GM406889139.pdfIn PDF document text
    • http://lamascheradiferro.dk/images/how-to-hack-a-roblox-account-2021_GM431946152.pdfIn PDF document text
    • http://lamascheradiferro.dk/images/microsoft-bing-robux_GM431946152.pdfIn PDF document text
    • http://lamascheradiferro.dk/images/roblox-com-free_GM431946152.pdfIn PDF document text
    • http://lamascheradiferro.dk/images/minecraft-java-free-trial_GM479516143.pdfIn PDF document text
    • http://lamascheradiferro.dk/images/coin-master-free-spins-and-coins-daily_GM406889139.pdfIn PDF document text
    • http://lamascheradiferro.dk/images/mobihack-net-roblox-hack_GM431946152.pdfIn PDF document text
    • http://lamascheradiferro.dk/images/minecraft-free-education_GM479516143.pdfIn PDF document text
    • http://lamascheradiferro.dk/images/nelson-diamant-hack-roblox_GM431946152.pdfIn PDF document text
    • http://lamascheradiferro.dk/images/roblox-free-bc-account-2021_GM431946152.pdfIn PDF document text
    • http://lamascheradiferro.dk/images/free-spins-coin-master-november-2021_GM406889139.pdfIn PDF document text
    • http://lamascheradiferro.dk/images/freer-tiktok_GM835599320.pdfIn PDF document text
    • http://lamascheradiferro.dk/images/free-roblox-printables_GM431946152.pdfIn PDF document text
    • http://lamascheradiferro.dk/images/hack-coin-master-spin_GM406889139.pdfIn PDF document text
    • http://lamascheradiferro.dk/images/get-free-robux-now_GM431946152.pdfIn PDF document text
    • http://lamascheradiferro.dk/images/master-coin-free-link_GM406889139.pdfIn PDF document text
    • http://lamascheradiferro.dk/images/get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://lamascheradiferro.dk/images/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 6

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_off00002efc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EFC 22900 bytes
SHA-256: fdd67d60b726bd25d97e1f18442f5e9ed9b3e630074d8b8da9a2ef37f113e1e9
font_01_sfnt_off000062ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62AB 19708 bytes
SHA-256: e7b8922a93a75eb196258ce313a4bbdb0bebb4971c9ea28d879d9c62de3eeada

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