Malicious PDF — malware analysis report

Static analysis result for SHA-256 72985083de4d5927…

MALICIOUS

PDF

42.6 KB Created: 2021-05-13 09:49:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: d4a6ebf1afa47357169b66841ffe77cd SHA-1: 8b7214d77ad1f6c79048b7101a09cc46745866e9 SHA-256: 72985083de4d5927e065a1e7f9e510eb35bf9af250cdc37d0ecb2928fd11464b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and sites offering game hacks, indicating a phishing or scam attempt. The presence of embedded URLs and a call-to-action button further supports this. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a potential for JavaScript execution or redirection to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • 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.
  • 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 https://netcdn.xyz/app/406889139/freespinandcoin-blogspot-com-game-hack In PDF document text
    • http://bepquannhu.vn/upload/editor/files/minecraft-116-free_GM479516143.pdfIn PDF document text
    • http://bepquannhu.vn/upload/editor/files/ac-market-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://bepquannhu.vn/upload/editor/files/robuxmatchcon_GM431946152.pdfIn PDF document text
    • http://bepquannhu.vn/upload/editor/files/coin-master-free-spin-software_GM406889139.pdfIn PDF document text
    • http://bepquannhu.vn/upload/editor/files/free-robux-mobile_GM431946152.pdfIn PDF document text
    • http://bepquannhu.vn/upload/editor/files/minecraft-windows-10-edition-free-with-java_GM479516143.pdfIn PDF document text
    • http://bepquannhu.vn/upload/editor/files/is-minecraft-vr-free_GM479516143.pdfIn PDF document text
    • http://bepquannhu.vn/upload/editor/files/coin-master-card-collection-hack_GM406889139.pdfIn PDF document text
    • http://bepquannhu.vn/upload/editor/files/how-to-get-free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://bepquannhu.vn/upload/editor/files/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://bepquannhu.vn/upload/editor/files/free-robux-stream_GM431946152.pdfIn PDF document text
    • http://bepquannhu.vn/upload/editor/files/coin-master-free-spin-and-coins-links-2021_GM406889139.pdfIn PDF document text
    • http://bepquannhu.vn/upload/editor/files/freerobuxhack-us-2021_GM431946152.pdfIn PDF document text
    • http://bepquannhu.vn/upload/editor/files/free-robux-generator-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://bepquannhu.vn/upload/editor/files/free-coin-master-hacks-no-verification-or-survey_GM406889139.pdfIn PDF document text
    • http://bepquannhu.vn/upload/editor/files/coin-master-free-link-2021_GM406889139.pdfIn PDF document text
    • http://bepquannhu.vn/upload/editor/files/roblox-people-girl_GM431946152.pdfIn PDF document text
    • http://bepquannhu.vn/upload/editor/files/claimrobux-net_GM431946152.pdfIn PDF document text
    • http://bepquannhu.vn/upload/editor/files/coin-master-free-spins-promo-code_GM406889139.pdfIn PDF document text
    • http://bepquannhu.vn/upload/editor/files/fb-coin-master-free-spins-link_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_off00004b27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4B27 24692 bytes
SHA-256: e491f81556e44cda6b0f848e24ea2f54ad0cd22cecaa71f12e229ed6a213dff5
font_01_sfnt_off0000829f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x829F 18900 bytes
SHA-256: 0bd07ae10b4135fe6bf307be1017512cce62593240b8ef3e9f0b310f171768fe