Malicious PDF — malware analysis report

Static analysis result for SHA-256 6faa8bcc24fa8930…

MALICIOUS

PDF

215.3 KB Created: 2021-07-09 14:18:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-25
MD5: eefe3029e45fcd6cd33215cde9b89db7 SHA-1: 9b6a65ca928f231054d205940f1f616024cf5d83 SHA-256: 6faa8bcc24fa893014aef3191335cfa9aeb62e17b5fad793e002f65693f86bd7
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links, including one identified as a malicious redirector. The primary link, 'http://netcdn.tw/app/1094591345/pokemon-go-free-and-verizon-game-hack', is presented as a lure for game hacks, which is a common social engineering tactic. The presence of embedded URLs and the identified malicious redirector strongly suggest an attempt to lead the user to a malicious site, likely for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier clean score 0.2211

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-and-verizon-game-hack In PDF document text
    • http://www.valenciamaids.com/userfiles/files/robux_GM431946152.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/how-to-get-free-premium-roblox_GM431946152.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/freegames911com-coinmastertipsandcheats2021freecoinsandspins_GM406889139.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/minecraft-sign-up-free_GM479516143.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/roblox-free-clothes-codes_GM431946152.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/coin-master-daily-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/unpatchable-free-robux_GM431946152.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/vip-roblox-free_GM431946152.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/how-to-get-free-shields-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/2021-roblox-hack-team_GM431946152.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/free-spins-coin-master-app_GM406889139.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/www-robux-com_GM431946152.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/free-robux-websites-that-work_GM431946152.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/free-roblox-groups-with-funds_GM431946152.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/free-item-roblox-pastebin_GM431946152.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/toolbox-for-minecraft-pe-mod-apk_GM479516143.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/how-to-get-minecraft-java-for-free_GM479516143.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/free-knife-code-assasins-roblox_GM431946152.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/coin-master-free-spins-hack_GM406889139.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/how-to-get-a-free-minecraft-account_GM479516143.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_off00031b1e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x31B1E 25576 bytes
SHA-256: 566972f3b2597e707b20cf5609e8b9f3ee47d0666705df367e736d11771f6c61

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