Malicious PDF — malware analysis report

Static analysis result for SHA-256 bec436303778c2af…

MALICIOUS

PDF

48.4 KB Created: 2021-05-17 00:48:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 6306b6663575e13a3b11df472dc3fcc7 SHA-1: 6c4d1a3425c56ec1405316e331f52cca20c224e0 SHA-256: bec436303778c2aff2951d7620509d4f1e5772e458eab10a93f810f78b435b8b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that point to known malicious redirectors, disguised as "free generator / game hack" lures. These links likely lead to further malicious content or phishing pages. The ML classifier also flagged this PDF as malicious, supporting the observed redirection behavior.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9013

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/431946152/how-to-get-free-robux-without-surveys-game-hack In PDF document text
    • http://www.apocalissedigesucristo.com/images/free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://www.apocalissedigesucristo.com/images/minecraft-java-free-trial_GM479516143.pdfIn PDF document text
    • http://www.apocalissedigesucristo.com/images/roblox-rape-hack_GM431946152.pdfIn PDF document text
    • http://www.apocalissedigesucristo.com/images/coin-master-hack-free-spins_GM406889139.pdfIn PDF document text
    • http://www.apocalissedigesucristo.com/images/roblox-hack-me-robux_GM431946152.pdfIn PDF document text
    • http://www.apocalissedigesucristo.com/images/free-minecraft-java-code_GM479516143.pdfIn PDF document text
    • http://www.apocalissedigesucristo.com/images/fbchampion_GM406889139.pdfIn PDF document text
    • http://www.apocalissedigesucristo.com/images/coin-master-free-spins-links-2021_GM406889139.pdfIn PDF document text
    • http://www.apocalissedigesucristo.com/images/bloxpink-free-robux_GM431946152.pdfIn PDF document text
    • http://www.apocalissedigesucristo.com/images/roblox-free-online-game_GM431946152.pdfIn PDF document text
    • http://www.apocalissedigesucristo.com/images/coin-master-spin-link_GM406889139.pdfIn PDF document text
    • http://www.apocalissedigesucristo.com/images/coin-master-hack-tool-v1-9-download_GM406889139.pdfIn PDF document text
    • http://www.apocalissedigesucristo.com/images/coin-master-free-spin-link-today-2021_GM406889139.pdfIn PDF document text
    • http://www.apocalissedigesucristo.com/images/coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • http://www.apocalissedigesucristo.com/images/minecraft-java-edition-free-download_GM479516143.pdfIn PDF document text
    • http://www.apocalissedigesucristo.com/images/real-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://www.apocalissedigesucristo.com/images/free-robux-mobile_GM431946152.pdfIn PDF document text
    • http://www.apocalissedigesucristo.com/images/free-robux-without-survey_GM431946152.pdfIn PDF document text
    • http://www.apocalissedigesucristo.com/images/how-to-get-free-roebucks-in-roblox_GM431946152.pdfIn PDF document text
    • http://www.apocalissedigesucristo.com/images/coin-master-free-gold_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_off00004a4e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A4E 29396 bytes
SHA-256: de4cd816e4566f012edaefd25fc2d61b57b5125aa71258ffd8c8d396a96473ce
font_01_sfnt_off00008e9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E9B 2816 bytes
SHA-256: 4555740682277f0055d57b15bd0ba953e5b51415ea3d21c93db391eace072d4f
font_02_sfnt_off000098ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x98AB 19060 bytes
SHA-256: 402aebe8c34fdbdb56c6d5ac0c879f316ccc47677bd032b34ef61ae0ac5a4f59

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