Malicious PDF — malware analysis report

Static analysis result for SHA-256 d1b6362cabdd2ac7…

MALICIOUS

PDF

34.7 KB Created: 2021-06-27 14:23:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: f6c928726346a698010a258263a4832b SHA-1: aaf359dfce8b99357f8a58adcb06600b49b6baf8 SHA-256: d1b6362cabdd2ac7bc8674c371cbb691dc70190f72638d8086df301024e60811
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. It uses a callback-phone (TOAD) lure. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • PDF links to a 'free generator / game hack' redirector high 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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.co/app/431946152/roblox-sword-free-game-hack PDF link annotation
    • http://aleshashop.net/uploaded_files/userfiles/files/how-do-we-get-free-robux_GM431946152.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/how-can-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/robux-online_GM431946152.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/are-roblox-hack-clients-a-thing_GM431946152.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/free-robux-rewards_GM431946152.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/coin-master-hack-mod-apk-download_GM406889139.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/can-i-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/how-do-you-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/coin-master-cheats-free_GM406889139.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/create-free-roblox-shirts_GM431946152.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/cheat-gg-roblox_GM431946152.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/how-to-hack-roblox-accounts-on-phone-2021_GM431946152.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/roblox-free-pants_GM431946152.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/appsmob-info-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/free-minecraft-servers-to-join_GM479516143.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/free-spins-for-coin-master-app_GM406889139.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/mount-everest-roblox-free-rescue-team-gamepass_GM431946152.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/how-do-you-earn-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/card-hack-in-coin-master_GM406889139.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/coin-master-today_GM406889139.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
font_00_sfnt_off00003065.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3065 22544 bytes
SHA-256: 5b9fad7d84f720180334885d1de79152f5bdbeca3c139274e37a404ee4a571c2
font_01_sfnt_off000062cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62CF 18988 bytes
SHA-256: 4e27f420d3aec8c732c6f83a5cfaf2f4488b3f8fb36a36c4a809e39067ca09ae

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