Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c88a6f5267ef13c…

MALICIOUS

PDF

43.2 KB Created: 2021-05-10 21:01:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 41d3657f96eb6596b1a763884099903d SHA-1: 0817949f9c6b8ff0f2305f81ac941a9371c8ceb6 SHA-256: 4c88a6f5267ef13cfdffd2ce764da5efeee7b363951bae6379d0917ef34adda8
180 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to malicious redirectors and IP addresses, disguised as offers for free game currency and hacks. These links likely lead to further malicious content or phishing pages. The document body and embedded URLs strongly indicate a lure for obtaining in-game currency or cheats, which is a common social engineering tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

Heuristics 5

  • 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.
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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/free-robux-sites-2021-game-hack In PDF document text
    • http://202.56.165.220/digilab/repository/how-to-get-daily-free-spins-on-coin-master_GM406889139.pdfPDF link annotation
    • http://202.56.165.220/digilab/repository/picture-roblox_GM431946152.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/roblox-hack-me-robux_GM431946152.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/coin-master-free-spin-daily-link_GM406889139.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/haktuts-coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/free-robux-that-actually-works-2021_GM431946152.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/free-robux-no-verification-2021-android_GM431946152.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/minecraft-windows-10-hacked-client_GM479516143.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/coin-master-online-hack-generator_GM406889139.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/how-to-get-free-roblox-money_GM431946152.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/coin-master-free-spin-and-coins-links_GM406889139.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/free-coin-and-spin-for-coin-master_GM406889139.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/is-there-an-actual-hack-that-work-for-coin-master_GM406889139.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/wwwcoin-master-hack-apk_GM406889139.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/roblox-hacks-and-cheats_GM431946152.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/coinmaster-com_GM406889139.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/game-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/how-to-hack-roblox-on-mobile_GM431946152.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/coin-master-daily-gift-free-spins-and-coins-link_GM406889139.pdfIn PDF document text
    • http://202.56.165.220/digilab/repository/free-spins-coin-master-daily_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
stream_003_off00004b27.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B27 24984 bytes
SHA-256: c0ce5f225ec568a0d665906eb5e3c4d8b59f41ad7406bb48888689f8d9dfbeeb
font_01_sfnt_off0000852d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x852D 18640 bytes
SHA-256: b8260c20a5a482fa631977c1895ef4fabb59c0a91f65cf95745fb521070d0a95

Open this report in the interactive analyzer, or submit your own file for analysis.