Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0b2c4152fa051e1…

MALICIOUS

PDF

34.5 KB Created: 2021-07-06 08:54:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 93a34c283e0288af8cb05ea95dc59313 SHA-1: e95ad2f44109f93e57c7f33c506ca691fc894ca4 SHA-256: a0b2c4152fa051e17a2053e5d7affabecd5aeb7cfd54cb034812a526784d15e9
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains multiple links that redirect to malicious infrastructure, specifically a site offering a 'free generator / game hack'. The ML classifier strongly indicated maliciousness, and the presence of redirector links suggests an attempt to lure users to a compromised or malicious site. No scripts were extracted, but the document's structure and embedded URLs point towards a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/406889139/how-to-generate-free-coin-master-spin-game-hack In PDF document text
    • http://lib.uho.ac.id/library//repository/roblox-robux_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/minecraft-apk-android-free_GM479516143.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/how-to-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/pokemon-go-vs-free-fire_GM1094591345.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/free-tiktok-followers-royal-key_GM835599320.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/generator-robux_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/roblox-cheat-engine-hacks-2021_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/free-modded-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/como-ser-hacker-roblox_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/how-to-make-clothes-free-on-roblox_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/free-get-2021-robux_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/free-minecraft-hosting-24-7_GM479516143.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/coin-master-coins_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/roblox-heroes-online_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/how-to-get-free-robux-inspect_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/how-to-download-wurst_GM479516143.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/best-minecraft-hacked-client-2021_GM479516143.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/hack-coin-master-ios-download_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/daily-free-coin-and-spin-link-for-coin-master_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
font_00_sfnt_off00002ffb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FFB 23176 bytes
SHA-256: 472e9197f312635cfa1c1c8a4c22a10c1683acd50efe137fc0c34728cff120f9
font_01_sfnt_off00006410.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6410 18336 bytes
SHA-256: 44149cbd1419f5cddd2185958f28928906a990b98f16256b2ecbc419de034d9f

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