Malicious PDF — malware analysis report

Static analysis result for SHA-256 78fe70dec7d42af7…

MALICIOUS

PDF

46.3 KB Created: 2021-06-08 13:00:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 6020c53ede800be0352c61ff482d896c SHA-1: c7d55db9b8db3cde1ef28da44ece36255b7da14e SHA-256: 78fe70dec7d42af71e9b5b5acbf9314fc1a44ba3636c6244a6758f230ccdae45
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to redirectors and domains associated with game hacks and free generators, indicating a social engineering lure. The presence of embedded URLs and the ML classifier's high confidence score suggest a malicious intent to redirect users to potentially harmful content. Although no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

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 https://netcdn.tw/app/431946152/roblox-hacker-png-game-hack In PDF document text
    • http://moringaforlove.com/images/coin-master-play-online-free_GM406889139.pdfIn PDF document text
    • http://moringaforlove.com/images/free-robux-gen_GM431946152.pdfIn PDF document text
    • http://moringaforlove.com/images/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://moringaforlove.com/images/roblox-hack-2021_GM431946152.pdfIn PDF document text
    • http://moringaforlove.com/images/coin-master-hack-xyz_GM406889139.pdfIn PDF document text
    • http://moringaforlove.com/images/how-to-get-free-clothes-roblox-2021_GM431946152.pdfIn PDF document text
    • http://moringaforlove.com/images/how-to-hack-minecraft_GM479516143.pdfIn PDF document text
    • http://moringaforlove.com/images/how-do-i-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://moringaforlove.com/images/free-robux-codes-2021-not-used_GM431946152.pdfIn PDF document text
    • http://moringaforlove.com/images/free-robux-with-no-verification_GM431946152.pdfIn PDF document text
    • http://moringaforlove.com/images/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://moringaforlove.com/images/coin-master-50-spin-link_GM406889139.pdfIn PDF document text
    • http://moringaforlove.com/images/coin-master-free-link-spin_GM406889139.pdfIn PDF document text
    • http://moringaforlove.com/images/roblox-free-no-download_GM431946152.pdfIn PDF document text
    • http://moringaforlove.com/images/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://moringaforlove.com/images/coin-mster-free_GM406889139.pdfIn PDF document text
    • http://moringaforlove.com/images/coin-master-hack-pro-gamers_GM406889139.pdfIn PDF document text
    • http://moringaforlove.com/images/coin-master-apk_GM406889139.pdfIn PDF document text
    • http://moringaforlove.com/images/free-roblox-card_GM431946152.pdfIn PDF document text
    • http://moringaforlove.com/images/minecraft-windows-10-free-code_GM479516143.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_004_off0000503b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x503B 28572 bytes
SHA-256: 2e26aabb69eb88ef1dba7d4b79a12c89b5fd86efedec11ed07859e8a4824c40c
font_01_sfnt_off00009197.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9197 18624 bytes
SHA-256: dfc79217ed9fc861967f2138c5ca633b5f38cfa1765decff75f1be4fb4ac0f1d

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