Malicious PDF — malware analysis report

Static analysis result for SHA-256 6449d018c7277963…

MALICIOUS

PDF

42.6 KB Created: 2021-05-17 23:35:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 90e1b8fb16c31e740e6d5879e8d0a48d SHA-1: 705b057744c7b4e5f408708b9a0227cd01410930 SHA-256: 6449d018c7277963e49102bb74c01ba5d1120e0a16795dd1e8e544b13c996f3b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links that redirect to malicious infrastructure, specifically targeting users interested in game hacks and free generators. The ML classifier also flagged this document as malicious with high confidence. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a phishing or redirection attack designed to lead users to potentially harmful content or further malware downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/406889139/how-to-hack-coin-master-without-root-game-hack In PDF document text
    • http://www.majdoorkalyansamiti.org/uploaded_files/userfiles/files/free-robux-no-human-verify_GM431946152.pdfIn PDF document text
    • http://www.majdoorkalyansamiti.org/uploaded_files/userfiles/files/how-to-get-roblox-credit-for-free_GM431946152.pdfIn PDF document text
    • http://www.majdoorkalyansamiti.org/uploaded_files/userfiles/files/minecraft-hacks-pc_GM479516143.pdfIn PDF document text
    • http://www.majdoorkalyansamiti.org/uploaded_files/userfiles/files/coin-master-free-link_GM406889139.pdfIn PDF document text
    • http://www.majdoorkalyansamiti.org/uploaded_files/userfiles/files/free-spins-from-coin-master_GM406889139.pdfIn PDF document text
    • http://www.majdoorkalyansamiti.org/uploaded_files/userfiles/files/hack-xp-net-coin-master_GM406889139.pdfIn PDF document text
    • http://www.majdoorkalyansamiti.org/uploaded_files/userfiles/files/coin-master-hack-online-generator-without-human-verification_GM406889139.pdfIn PDF document text
    • http://www.majdoorkalyansamiti.org/uploaded_files/userfiles/files/how-to-get-free-faces-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.majdoorkalyansamiti.org/uploaded_files/userfiles/files/coin-master-spin-free_GM406889139.pdfIn PDF document text
    • http://www.majdoorkalyansamiti.org/uploaded_files/userfiles/files/free-2021-robux_GM431946152.pdfIn PDF document text
    • http://www.majdoorkalyansamiti.org/uploaded_files/userfiles/files/free-spins-coinmaster_GM406889139.pdfIn PDF document text
    • http://www.majdoorkalyansamiti.org/uploaded_files/userfiles/files/free-robux-giveaway_GM431946152.pdfIn PDF document text
    • http://www.majdoorkalyansamiti.org/uploaded_files/userfiles/files/coin-master-hacks-for-gold-cards_GM406889139.pdfIn PDF document text
    • http://www.majdoorkalyansamiti.org/uploaded_files/userfiles/files/get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.majdoorkalyansamiti.org/uploaded_files/userfiles/files/how-to-hack-robux_GM431946152.pdfIn PDF document text
    • http://www.majdoorkalyansamiti.org/uploaded_files/userfiles/files/spin-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.majdoorkalyansamiti.org/uploaded_files/userfiles/files/roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://www.majdoorkalyansamiti.org/uploaded_files/userfiles/files/games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://www.majdoorkalyansamiti.org/uploaded_files/userfiles/files/free-robux-com-2021_GM431946152.pdfIn PDF document text
    • http://www.majdoorkalyansamiti.org/uploaded_files/userfiles/files/free-roblox-outfits-2021_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004bab.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BAB 24752 bytes
SHA-256: 0812edf4e82d3851f319ead5d321cab992450b9f96ab366b2b68bb416eb16c97
font_01_sfnt_off000083f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83F7 18384 bytes
SHA-256: 737d2cfdb9b4b1cff5b2208f55c42f49b9f58f49348aca7b669208ba5fc29a16

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