Malicious PDF — malware analysis report

Static analysis result for SHA-256 7fe8be275a69005d…

MALICIOUS

PDF

33.5 KB Created: 2021-07-03 18:20:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 6bf56bc562aba4051e18d01e43770f29 SHA-1: 21ce05259d80fcbfa62a14409decef21c4158379 SHA-256: 7fe8be275a69005ddb6092ee1a5575e88bdb52ef951ece8348a1cde23bbca7f3
180 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document employs a lure of game hacks and free currency to trick users into clicking malicious links. The primary link directs to a known malicious redirector, which in turn serves further PDF files hosted on an IP address. These subsequent PDFs likely contain exploits or further redirection to download and execute a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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/406889139/coin-master-connection-lost-game-hack In PDF document text
    • http://111.68.26.74/widyapustaka/repository/free-robux-giveaway-live_GM431946152.pdfPDF link annotation
    • http://111.68.26.74/widyapustaka/repository/free-robux-real-working_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/promo-codes-hack-on-roblox-gives-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/how-to-get-robux-for-free-hack-2021_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/roblox-spiele-hacke_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/hack-robux-ilimit_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/dominus-roblox-free_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/roblox-piano-hack-comment-faire_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/hacks-para-roblox_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/online-hacking-tricks-coin-master_GM406889139.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/how-get-free-bc-on-roblox_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/hack-de-roblox-robux_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/wurst_GM479516143.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/cheat-roblox-cb-r-download_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/robux-hack-100-works_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/hack-para-hackear-cuentas-de-roblox_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/coin-master-hack-ios-jailbreak_GM406889139.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/roblox-account-has-been-hacked_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/roblox-hack-codes_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/coin-master-hack-software_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
stream_002_off00002f53.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2F53 22420 bytes
SHA-256: 5eafca15100f131a6f1753ae31250567a48d54a2854214ad23cb65919bc84b0c
font_01_sfnt_off00006177.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6177 17836 bytes
SHA-256: a76b435a66663bc960d26f3f6b43f7089cbbf554bd18db08d117cbb299e70e3d

Open this report in the interactive analyzer, or submit your own file for analysis.