Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6151b201016e9c0…

MALICIOUS

PDF

44.4 KB Created: 2021-05-19 19:45:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 8b0dc3ab0d7f5900b4e39515613cbd48 SHA-1: 2925bdb4c9dd520c8da6fa113a36bdb258ff96a0 SHA-256: b6151b201016e9c03e6d680510bafb66649ce67486aff6ced2c9dda23b95156c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, disguised as offers for game hacks and free generator codes. The primary link, https://netcdn.xyz/app/1094591345/promo-code-for-pokemon-go-free-game-hack, is flagged as a malicious redirector. The document body, though partially garbled, contains similar lure text and URLs, reinforcing the phishing and redirection intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

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.xyz/app/1094591345/promo-code-for-pokemon-go-free-game-hack In PDF document text
    • http://www.ladillo.com/images/free-minecraft-account-and-password-generator_GM479516143.pdfIn PDF document text
    • http://www.ladillo.com/images/minecraft-pe-hacks-ios_GM479516143.pdfIn PDF document text
    • http://www.ladillo.com/images/how-do-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.ladillo.com/images/coin-master-60-spins_GM406889139.pdfIn PDF document text
    • http://www.ladillo.com/images/how-to-change-your-username-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://www.ladillo.com/images/hack-coin-master-android_GM406889139.pdfIn PDF document text
    • http://www.ladillo.com/images/roblox-hack-app_GM431946152.pdfIn PDF document text
    • http://www.ladillo.com/images/free-robux-gen_GM431946152.pdfIn PDF document text
    • http://www.ladillo.com/images/coin-and-spin_GM406889139.pdfIn PDF document text
    • http://www.ladillo.com/images/free-coins-on-coin-master-without-verification_GM406889139.pdfIn PDF document text
    • http://www.ladillo.com/images/minecraft-servers-that-allow-hacks_GM479516143.pdfIn PDF document text
    • http://www.ladillo.com/images/free-robux-no-scam_GM431946152.pdfIn PDF document text
    • http://www.ladillo.com/images/free-roblox-clothes-2021_GM431946152.pdfIn PDF document text
    • http://www.ladillo.com/images/robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://www.ladillo.com/images/flip-master-coins-hack_GM406889139.pdfIn PDF document text
    • http://www.ladillo.com/images/coin-master-hack-tool-no-survey_GM406889139.pdfIn PDF document text
    • http://www.ladillo.com/images/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.ladillo.com/images/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://www.ladillo.com/images/pubg-uc-yollama_GM1330123889.pdfIn PDF document text
    • http://www.ladillo.com/images/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000499e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x499E 24068 bytes
SHA-256: 70f0a439e48ab8c62fea5c62c752c16f3fb0d1bdadec773be7798010b9d64e26
font_01_sfnt_off00008013.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8013 3436 bytes
SHA-256: 97acb3dfe99d8aca5d6f8db8393b488ed98b2263432579da10c481344d87daf1
font_02_sfnt_off00008c2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C2A 18016 bytes
SHA-256: f88665f0a6fbd2288536caa78c0cd4bb5dc4e7eb579a6c1ada31136cffd6cbd6