Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f1ed8c7bb1214ac…

MALICIOUS

PDF

34.6 KB Created: 2021-07-04 23:14:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: d533aa6c9b1762a29163c200a340ff69 SHA-1: d64e2b96b5f61bda4b083a2a819f7938b998c0cc SHA-256: 0f1ed8c7bb1214acacd76953d2285b1b3333af6de41020e4e3b3e82ab60ca4e0
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one to a known malicious redirector infrastructure at http://netcdn.tw/app/431946152/free-robux-easy-and-fast-game-hack. The document body and heuristics indicate a lure for free game currency or hacks, which is a common social engineering tactic. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the lure suggest a phishing or redirection attack.

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/431946152/free-robux-easy-and-fast-game-hack In PDF document text
    • http://proyetec.com.co/aym_image/files/coin-master-free-spins-and-coins-blogspot_GM406889139.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/coin-master-link-for-spins_GM406889139.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/minecraft-svg-images-free_GM479516143.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/how-to-get-coin-master-card-free_GM406889139.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/mad-city-roblox-cheats_GM431946152.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/bloxawards-com-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/how-to-get-minecraft-for-free-on-xbox-one_GM479516143.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/roblox-free-adidas-tenue_GM431946152.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/robux-hack-site_GM431946152.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/minecraft-dungeons-free_GM479516143.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/roblox-new-free-shirt-template_GM431946152.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/hack-jailbreak-roblox-dinero-infinito_GM431946152.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/robux-free-co_GM431946152.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/coin-master-free-codes_GM406889139.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/xray-mod-minecraft-114_GM479516143.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/5-roblox-games-that-give-free-robux-working-youtubeyoutube_GM431946152.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/pokemon-go-for-free-app_GM1094591345.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/free-minecraft-skins_GM479516143.pdfIn PDF document text
    • http://proyetec.com.co/aym_image/files/coin-master-free-spins-2021-haktuts_GM406889139.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_off00003045.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3045 22264 bytes
SHA-256: c11b6b48b6cfc2fba6c7894b49992ee791275dfa2ad3bc41c255f18f70c2ce9b
font_01_sfnt_off000061a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61A2 19172 bytes
SHA-256: e478a87f33177f62414f41e8523dd2647ca5964d0e32b68d8766533df2c128b7

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