Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7c89dbb059b4e8b…

MALICIOUS

PDF

34.1 KB Created: 2021-06-20 00:51:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: a91d949d24eba7ccb80efb93e5bdffa5 SHA-1: e24f95996c8401f0504e0cc30e066348ccba9a5d SHA-256: f7c89dbb059b4e8ba8c0692ad2643f21e0c5af8a42da746565c23d450dd61c72
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, masquerading as game hacks or generators. The primary lure URL is http://netcdn.co/app/431946152/hacking-roblox-non-fe-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a phishing or social engineering attack aimed at tricking users into visiting malicious sites, likely for malware distribution or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/hacking-roblox-non-fe-game-hack In PDF document text
    • http://library.patria-artha.ac.id/repository/free-robux-youtube-2021_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/robux-hack-tools_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/robux-free-gift-card-org-hack_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/minecraft-java-edition-free-code_GM479516143.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/how-do-you-get-free-daily-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/how-to-get-free-robux-1-min_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/robux-apk_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/free-robux-game-uncopylocked_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/coin-master-apk-hack-35-8_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/how-do-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/free-robux-co_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/how-to-get-free-roblox-items_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/coin-master-hack-no-survey_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/coin-master-guide-to-free-spins-and-rewards_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/roblox-land-free-robux_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/download-roblox-for-free-pc_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/bloxburg-free-robux_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/free-minecraft-account-list_GM479516143.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/roblox-earn_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/100-free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002f4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F4B 22244 bytes
SHA-256: b545bd86455934fa331e07830425f3bc207d51fc00480c31b2710d457eebe4d5
font_01_sfnt_off000060b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60B0 18940 bytes
SHA-256: 4d3bb4c90fd0c5468f89991e38715b431b1d854511644116fcfe928274b44d19

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