Malicious PDF — malware analysis report

Static analysis result for SHA-256 5dbfbfe8f404ee83…

MALICIOUS

PDF

35.1 KB Created: 2021-07-01 08:30:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: c5860077d4112dac0cf93c827087bf63 SHA-1: 32c9fb108448ae77b8c3bc01473d52d94e1440f9 SHA-256: 5dbfbfe8f404ee838a09cc911f1ab95b504accdf7aee402bbd025ec39e4a02fb
180 Risk Score

Malware Insights

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

This PDF document contains multiple links, including one identified as a malicious redirector leading to a 'game hack' lure. The presence of a download button lure and callback phishing indicators further suggest a malicious intent to trick the user into downloading potentially harmful content or engaging in a scam. The ML classifier also strongly flagged this PDF as malicious.

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.
  • 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
  • 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/dragon-ball-rage-roblox-hack-game-hack In PDF document text
    • http://stikespantirapih.ac.id/home/repository/minecraft-windows-10-edition-free_GM479516143.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/coin-master-free-coins-link-2021_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/coin-master-free-cards_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/free-roblox-shading_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/free-robux-login_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/roblox-free-robux-maps_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/how-to-speed-hack-on-roblox-without-cheat-engine-2021_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/free-roblox-redeem-codes-2021_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/mcpe-master-free-coins_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/free-roblox-accounts-2021-with-robux_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/coin-master-free-spins-link-2021-iphone_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/roblox-se-througth-all-hack_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/free-roblox-hack_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/how-to-hack-people-in-roblox_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/coin-master-free-download-pc_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/2021-robux-free_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/roblox-speed-hack-2021-november_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/free-robux-generator-no-verification_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_off000031e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31E4 22724 bytes
SHA-256: 2719d2494867c62655dc6176a87a713fe9ce66771a149d78843082e0b33bf47a
font_01_sfnt_off000064d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64D0 18824 bytes
SHA-256: e112d9c0c0d91ce87f197846aa0cd0d25e18af402a8822d10729fca924cbb356

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