Malicious PDF — malware analysis report

Static analysis result for SHA-256 013d8c5112f67c17…

MALICIOUS

PDF

34.1 KB Created: 2021-07-03 16:04:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: e3f7a20c2e90d6e2ad08b080a6561652 SHA-1: d5dd8caf08c933584b1b9c2ca51da1d04bdd8f87 SHA-256: 013d8c5112f67c17ade25c7798e6eb669bf16a1f48c946d28c0fddf9a45177f4
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links designed to lure users into downloading potentially malicious files or visiting scam websites, disguised as game hacks or generators. The primary link, http://netcdn.tw/app/406889139/freecoins-game-hack, is identified as malicious redirector infrastructure. The document body and embedded URLs strongly suggest a phishing or scamming attempt, likely leading to further malware or credential harvesting.

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/freecoins-game-hack In PDF document text
    • http://lib.kunci.or.id/repository/coin-master-hack-xyz-download_GM406889139.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/what-is-a-free-robux-code_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/free-dominus-roblox-hat_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/roblox-lightning-hack_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/is-minecraft-vr-free_GM479516143.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/robloux-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/how-to-get-minecraft-for-free-on-phone_GM479516143.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/coin-master-free-coins_GM406889139.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/cheap-free-easy-robux_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/roblox-madcity-niveau-100-cheat_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/how-to-get-free-robux-in-2021_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/coin-master-hack-online-no-human-verification_GM406889139.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/coin-master-free-spins-and-free-coins_GM406889139.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/how-to-hack-roblox-dragon-ball-rage_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/free-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/how-to-get-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/funbloxxyz-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.kunci.or.id/repository/rbx-free-robux_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_off00002f18.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2F18 23324 bytes
SHA-256: 218fa31cdcd880759f7d22b39cb2ac9b79c4dab81dac5d03201c59c80ec39b4a
font_01_sfnt_off000063e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63E9 17896 bytes
SHA-256: 95b27e0fe0f8d09f21308dfe7f1e0da3cbc5e6d7e802a0f52430e90404511a42

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