Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a7cb4d3084b8f7d…

MALICIOUS

PDF

44.0 KB Created: 2021-05-12 03:06:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 805839f0de3e6a0507bdc4c2bb8ebb0e SHA-1: 5be2189ffb40ef93fead94e87771b37a024e3654 SHA-256: 7a7cb4d3084b8f7d96f48e1f8737b4e2e3da9c6f820cbc745c130c842b700664
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document exploits a common lure of game hacks and cheats to entice users into clicking a link. This link, 'https://netcdn.xyz/app/431946152/roblox-hacks-and-cheats-game-hack', is identified as a malicious redirector. The document's structure and embedded content suggest it is designed to initiate a download or redirect to a malicious site, likely as part of a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier clean score 0.0142

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/roblox-hacks-and-cheats-game-hack In PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00003464.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3464 25836 bytes
SHA-256: 998dbd3152772020d1ecea01de5b21fbcd3c259a58c253aa42c3b4d96159a1b4
font_01_sfnt_off00007123.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7123 7420 bytes
SHA-256: 0b188308ab0e7ffce9913d63d697a586f2937cafc51a771db38e3a566cd37e24
font_02_sfnt_off00008992.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8992 18624 bytes
SHA-256: fd38699d39b76a4f9eae772e1d62c447b40f492bf7651a7365d5b223074a20b1

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