Malicious PDF — malware analysis report

Static analysis result for SHA-256 fefb180230c84c3e…

MALICIOUS

PDF

43.8 KB Created: 2021-05-19 09:03:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 7f514f649c19db6f84a4dc460ce11cb7 SHA-1: d4521a153a19cecbd1a03e1413f022b0efc13165 SHA-256: fefb180230c84c3e2ed4226b49f913c96d6725dc280646a111e5fbd44e60c9e6
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for a "Coin Master Hack" which redirects to malicious infrastructure. The presence of embedded URLs and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content. No scripts were extracted, but the document's structure and embedded links strongly suggest a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

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/coin-master-hack-no-verification-2021-game-hack In PDF document text
    • http://bogatyr.com/images/get-free-roblox_GM431946152.pdfIn PDF document text
    • http://bogatyr.com/images/how-to-hack-someones-account-on-roblox_GM431946152.pdfIn PDF document text
    • http://bogatyr.com/images/coin-master-hack-free-spins_GM406889139.pdfIn PDF document text
    • http://bogatyr.com/images/coin-master-free-spins-and-coins-app_GM406889139.pdfIn PDF document text
    • http://bogatyr.com/images/free-spin-link-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://bogatyr.com/images/no-verification-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://bogatyr.com/images/how-to-get-free-snacks-on-coin-master_GM406889139.pdfIn PDF document text
    • http://bogatyr.com/images/roblox-hack-2021_GM431946152.pdfIn PDF document text
    • http://bogatyr.com/images/how-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://bogatyr.com/images/minecraft-menu_GM479516143.pdfIn PDF document text
    • http://bogatyr.com/images/how-to-get-free-robux-without-offers_GM431946152.pdfIn PDF document text
    • http://bogatyr.com/images/roblox-help-free-robux_GM431946152.pdfIn PDF document text
    • http://bogatyr.com/images/coin-master-hack_GM406889139.pdfIn PDF document text
    • http://bogatyr.com/images/coin-master-free-spins-iphone_GM406889139.pdfIn PDF document text
    • http://bogatyr.com/images/free-robux-just-click_GM431946152.pdfIn PDF document text
    • http://bogatyr.com/images/hacked-roblox-game_GM431946152.pdfIn PDF document text
    • http://bogatyr.com/images/optifine-pe_GM479516143.pdfIn PDF document text
    • http://bogatyr.com/images/50-000-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://bogatyr.com/images/how-to-hack-coin-master-ios_GM406889139.pdfIn PDF document text
    • http://bogatyr.com/images/coin-master-rewards-free-spins_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000046af.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x46AF 24240 bytes
SHA-256: fcf41fa6c79470461ba4f8c3d9c0c3e761cf75c888da7b92f1a1adad2186e43f
font_01_sfnt_off00007e16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E16 2944 bytes
SHA-256: fcfcd28869b8d6c7503d63ed8d48371ec5b580fea2733193e2acbb82b3d30a76
font_02_sfnt_off00008840.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8840 18252 bytes
SHA-256: 180d563c5e2d4e96f25bdfb7de4de3bd7d6a0696216fbddae55f211609535b0c

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