Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d919cd66b878939…

MALICIOUS

PDF

48.4 KB Created: 2021-06-11 04:59:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: c83eca7f2864599e799674cbdc1724e5 SHA-1: dfd1d124a085fc8a152c731fdaed1c26466278b6 SHA-256: 0d919cd66b8789393bee6cd3ee69259ffe7b1a49e60146e9ab37f9056d1788ab
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links, one of which, https://netcdn.tw/app/431946152/free-roblox-membership-game-hack, is identified as a malicious redirector. The document body and heuristics suggest a lure for free game items or hacks, a common tactic for phishing or malware distribution. No scripts were extracted, but the presence of malicious links and the lure indicate a high likelihood of a phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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.tw/app/431946152/free-roblox-membership-game-hack In PDF document text
    • https://www.aubay.com/wp-content/uploads/fsqm-files/free-spins-for-coin-master-app_GM406889139.pdfIn PDF document text
    • https://www.aubay.com/wp-content/uploads/fsqm-files/roblox-how-to-get-free-packages_GM431946152.pdfIn PDF document text
    • https://www.aubay.com/wp-content/uploads/fsqm-files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://www.aubay.com/wp-content/uploads/fsqm-files/roblox-all-clothes-free_GM431946152.pdfIn PDF document text
    • https://www.aubay.com/wp-content/uploads/fsqm-files/free-robux-3-pastbincom_GM431946152.pdfIn PDF document text
    • https://www.aubay.com/wp-content/uploads/fsqm-files/roblox-zone-free-robux_GM431946152.pdfIn PDF document text
    • https://www.aubay.com/wp-content/uploads/fsqm-files/how-to-get-minecraft-for-free-on-chromebook_GM479516143.pdfIn PDF document text
    • https://www.aubay.com/wp-content/uploads/fsqm-files/free-roblox-game-clones_GM431946152.pdfIn PDF document text
    • https://www.aubay.com/wp-content/uploads/fsqm-files/como-tener-anti-gravedad-en-roblox-hack-check-crashed_GM431946152.pdfIn PDF document text
    • https://www.aubay.com/wp-content/uploads/fsqm-files/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://www.aubay.com/wp-content/uploads/fsqm-files/comment-hacker-des-map-roblox-roblox_GM431946152.pdfIn PDF document text
    • https://www.aubay.com/wp-content/uploads/fsqm-files/how-do-u-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.aubay.com/wp-content/uploads/fsqm-files/rblx-city-free-robux_GM431946152.pdfIn PDF document text
    • https://www.aubay.com/wp-content/uploads/fsqm-files/how-to-hack-money-in-heists-simulator-roblox_GM431946152.pdfIn PDF document text
    • https://www.aubay.com/wp-content/uploads/fsqm-files/how-to-get-dominus-for-free-in-roblox_GM431946152.pdfIn PDF document text
    • https://www.aubay.com/wp-content/uploads/fsqm-files/free-cool-roblox-accounts_GM431946152.pdfIn PDF document text
    • https://www.aubay.com/wp-content/uploads/fsqm-files/roblox-hack-script-animations_GM431946152.pdfIn PDF document text
    • https://www.aubay.com/wp-content/uploads/fsqm-files/hack-para-roblox-mathdrive-jailbreak_GM431946152.pdfIn PDF document text
    • https://www.aubay.com/wp-content/uploads/fsqm-files/free-coin-master-spins-link_GM406889139.pdfIn PDF document text
    • https://www.aubay.com/wp-content/uploads/fsqm-files/roblox-free-exploits-with-decompiler_GM431946152.pdfIn 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_004_off0000514a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x514A 26476 bytes
SHA-256: f5d9c463b98fddc9f3f24b1a435fa7381de8f07b3af99ec5067145a1664adcec
font_01_sfnt_off00008f48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F48 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off00009933.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9933 18868 bytes
SHA-256: df22382a67b9f0add9e9fceaf7a7dd949980b4674053f7c77eced83ccef01dad

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