Malicious PDF — malware analysis report

Static analysis result for SHA-256 58a5b505a562601a…

MALICIOUS

PDF

218.1 KB Created: 2021-07-06 02:56:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 7a568c35b0708ba57faa5d04d222c150 SHA-1: 4eca21d3bad3d0f7a759b3f9a5bffb36997cfe53 SHA-256: 58a5b505a562601acd2bc2c9947a3e409204a18672ccb66a4cdb7818b7c81e4c
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple heuristics indicating it links to malicious redirector infrastructure, specifically promoting a 'Pokemon Go Free Rare Candy' hack. The embedded URL, http://netcdn.tw/app/1094591345/pokemon-go-free-rare-candy-game-hack, is identified as a malicious redirector. This suggests the document's primary purpose is to trick users into visiting this URL, likely leading to further malicious content or exploitation.

Machine Learning

  • Nyx PDF Classifier clean score 0.2223

Heuristics 3

  • 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.
  • 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/1094591345/pokemon-go-free-rare-candy-game-hack In PDF document text
    • http://stikespantirapih.ac.id/home/repository/coin-master-daily-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/how-to-get-roblox-account-back-if-hacked_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/cookie-hack-roblox-players-on-galaxy-note-8_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/free-robux-hack-sheet_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/apps-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/how-to-get-free-robux-on-phone-2021_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/robux-hack-lazyassgamer_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/hack-to-protect-village-on-coin-master_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/jailbreak-roblox-hack-2021-february_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/roblox-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/free-roblox-fedora_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/coin-master-hack-ios-no-human-verification_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/how-do-you-get-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/how-to-get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/roblox-build-a-boat-for-treasure-fly-hack_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/coin-master-hacks-2021_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/free-glasses-for-roblox_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/da-hood-cheats-roblox_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/how-i-hack-roblox_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/survivor-hack-scrip-t-roblox_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_023_off000322b2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x322B2 25576 bytes
SHA-256: 332af2d4ec262f82b9df9e6719c5f3d0ff2373233f666b7b0094f9a8162d127a

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