Malicious PDF — malware analysis report

Static analysis result for SHA-256 379d773129ace66c…

MALICIOUS

PDF

34.3 KB Created: 2021-07-04 10:21:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 2ade314f60ec6c2b94324178af3ba7f7 SHA-1: 4cd3bf57a109ec75c8a4133fec765c0562df52c1 SHA-256: 379d773129ace66c09bef9fb8a8e831d1c124aeef45b61402b05f2522773420d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirector infrastructure, specifically advertising free game currency and hacks for popular games like Roblox and Coin Master. The document body and embedded URLs strongly suggest a phishing or scam attempt designed to lure users to malicious sites. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a malicious redirection workflow, likely initiated via a spearphishing attachment.

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/roblox-group-free-robux-game-hack In PDF document text
    • https://asiavisiontreks.com/userfiles/files/robux-converter_GM431946152.pdfIn PDF document text
    • https://asiavisiontreks.com/userfiles/files/coun-master_GM406889139.pdfIn PDF document text
    • https://asiavisiontreks.com/userfiles/files/free-robux-hack-2021-with-no-oprewards_GM431946152.pdfIn PDF document text
    • https://asiavisiontreks.com/userfiles/files/google-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://asiavisiontreks.com/userfiles/files/wurst-hacked-client_GM479516143.pdfIn PDF document text
    • https://asiavisiontreks.com/userfiles/files/hack-para-coin-master-sin-verification_GM406889139.pdfIn PDF document text
    • https://asiavisiontreks.com/userfiles/files/get-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://asiavisiontreks.com/userfiles/files/roblox-redeem-codes-free_GM431946152.pdfIn PDF document text
    • https://asiavisiontreks.com/userfiles/files/minecraft-windows-10-free-with-java_GM479516143.pdfIn PDF document text
    • https://asiavisiontreks.com/userfiles/files/microsoft-rewards-robux_GM431946152.pdfIn PDF document text
    • https://asiavisiontreks.com/userfiles/files/free-robux-no-surbey_GM431946152.pdfIn PDF document text
    • https://asiavisiontreks.com/userfiles/files/how-to-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://asiavisiontreks.com/userfiles/files/master-free-spin-and-coin-link_GM406889139.pdfIn PDF document text
    • https://asiavisiontreks.com/userfiles/files/download-hacks-for-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • https://asiavisiontreks.com/userfiles/files/coin-master-time-hack_GM406889139.pdfIn PDF document text
    • https://asiavisiontreks.com/userfiles/files/free-robux-hack-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://asiavisiontreks.com/userfiles/files/microsoft-bing-robux_GM431946152.pdfIn PDF document text
    • https://asiavisiontreks.com/userfiles/files/microsoft-free-robux_GM431946152.pdfIn PDF document text
    • https://asiavisiontreks.com/userfiles/files/roblox-money-hack_GM431946152.pdfIn PDF document text
    • https://asiavisiontreks.com/userfiles/files/how-to-get-free-robux-without-downloading-anything_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
font_00_sfnt_off00002eba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EBA 22528 bytes
SHA-256: 422d09e6c09a132e5afa958cd92d82b395f133be01a2155b5dd2181e7f4618ff
font_01_sfnt_off00006117.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6117 18968 bytes
SHA-256: f48b2ae17e84399e3a6b420fde02f8f729f2240ca84fd7cf9c0f4aab3f14a6ff

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