Malicious PDF — malware analysis report

Static analysis result for SHA-256 e275414f030bddf3…

MALICIOUS

PDF

42.4 KB Created: 2021-05-20 01:13:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 5abc96bafa1ddc31163026d0ad9e3b66 SHA-1: aea6d8fe0628f3d62b5086db2530b55531503bf9 SHA-256: e275414f030bddf31d828fedc85d810c10d4d4c797ec9a4176befcdb11f2f6a2
180 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to websites that are advertised as offering game hacks and generators, such as 'Coin Master Hack Version Apk Download'. One of these links points to a known malicious redirector infrastructure, and another uses a raw IP address, indicating a high likelihood of malicious intent. The document body and embedded URLs suggest a lure for users seeking cheats or in-game currency, which is a common tactic for phishing or distributing further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/406889139/coin-master-hack-version-apk-download-game-hack In PDF document text
    • http://183.91.70.7//repository/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdfPDF link annotation
    • http://183.91.70.7/repository/minecraft-items_GM479516143.pdfIn PDF document text
    • http://183.91.70.7//repository/fbchampion_GM406889139.pdfIn PDF document text
    • http://183.91.70.7/repository/without-tiktok-free-fire_GM835599320.pdfIn PDF document text
    • http://183.91.70.7/repository/how-to-hack-roblox-passwords_GM431946152.pdfIn PDF document text
    • http://183.91.70.7//repository/how-to-get-free-golden-card-in-coin-master_GM406889139.pdfIn PDF document text
    • http://183.91.70.7//repository/how-to-get-minecraft-windows-10-edition-for-free_GM479516143.pdfIn PDF document text
    • http://183.91.70.7/repository/coin-master-hack-app-2021_GM406889139.pdfIn PDF document text
    • http://183.91.70.7//repository/pubg-uc-buy-paytm_GM1330123889.pdfIn PDF document text
    • http://183.91.70.7//repository/robux-scam_GM431946152.pdfIn PDF document text
    • http://183.91.70.7//repository/coin-master-free-soins_GM406889139.pdfIn PDF document text
    • http://183.91.70.7//repository/free-roblox-groups-with-funds_GM431946152.pdfIn PDF document text
    • http://183.91.70.7/repository/how-to-hack-in-roblox-prison-life_GM431946152.pdfIn PDF document text
    • http://183.91.70.7//repository/how-do-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://183.91.70.7/repository/is-there-a-way-to-get-free-tiktok-followers_GM835599320.pdfIn PDF document text
    • http://183.91.70.7//repository/coin-master-free-spins-and-coins-today_GM406889139.pdfIn PDF document text
    • http://183.91.70.7/repository/free-coins-coin-master-today_GM406889139.pdfIn PDF document text
    • http://183.91.70.7/repository/legitimate-coin-master-free-spins-apk_GM406889139.pdfIn PDF document text
    • http://183.91.70.7//repository/how-to-block-someone-on-coin-master_GM406889139.pdfIn PDF document text
    • http://183.91.70.7/repository/coin-master-hack-version-download-2021_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_off00004897.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4897 25216 bytes
SHA-256: 612083b80562b43a1cfa70141381be911e3e1aa227fe37e06c8d45d2d3352a87
font_01_sfnt_off00008254.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8254 18608 bytes
SHA-256: 1dc11e7f68bd978fc0a92f78b05146ad1c6754ecfa484bd6206fefa9f56aad89

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