Malicious PDF — malware analysis report

Static analysis result for SHA-256 a69c4d8d29825425…

MALICIOUS

PDF

35.3 KB Created: 2021-06-29 00:35:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 050c6eb1171f1690250c12b3cda58d51 SHA-1: 2260f919fe8a4f296ba818afcdd5c193e41623f2 SHA-256: a69c4d8d29825425e297e020df37ef49f92ee53bb4987b679ae598719eed66ba
180 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to websites offering game hacks and free currency, which are common lures for phishing and malware distribution. The document redirects to known malicious infrastructure and uses an IP address in one of its links, indicating a high likelihood of malicious intent. No scripts were extracted, but the embedded URLs and heuristic firings strongly suggest a phishing or malware delivery attempt.

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.co/app/431946152/did-my-roblox-get-hacked-game-hack In PDF document text
    • http://111.68.26.74/widyapustaka/repository/coin-master-free-blogspot_GM406889139.pdfPDF link annotation
    • http://111.68.26.74/widyapustaka/repository/how-to-fly-in-struid-roblox-for-free-youtube_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/free-robux-please_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/roblox-hack-deutsch_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/abstract-free-hack-roblox-download-safe_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/hack-coin-master-app_GM406889139.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/hacks-for-roblox-royal-high_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/coin-master-free-spins-link-download_GM406889139.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/http-roblox-hack-mobile-generator-net_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/roblox-vehicle-simulator-speed-hack_GM431946152.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/free-minecraft-accounts-2021_GM479516143.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/free-vip-server-roblox_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/give-free-robux_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/how-to-hack-rs-in-roblox_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/how-to-download-minecraft-for-free-ios_GM479516143.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/ccv3-roblox-hack-how-to-through-walls-new-2021_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/roblox-hack-download-lumber-tycoon-2_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/com-roblox_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/how-to-hack-roblox-accounts-2021-easy_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
font_00_sfnt_off0000307a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x307A 22700 bytes
SHA-256: c0b37ae6871433e2313c953bb028eaa5fa7d1763e5d318e937f3ea2cea499298
font_01_sfnt_off0000633f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x633F 19600 bytes
SHA-256: c06db976ab6f3384f904feffed6d706045fbabbb409ef7204f04202a54997274

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