Malicious PDF — malware analysis report

Static analysis result for SHA-256 a1046509cd2ac2db…

MALICIOUS

PDF

32.8 KB Created: 2021-07-06 02:14:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: f2709fea697a56ada57b5bc01b7db399 SHA-1: 30fb427c300db2eca1ff1251d90050bb03a6af4d SHA-256: a1046509cd2ac2dbf7065d7f106b4498638b0b136d72d069b9dddd590473a335
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains lures for free Robux and game hacks, which is a common social engineering tactic to trick users into clicking malicious links. The embedded URL directs to a known malicious redirector, indicating a phishing or scam attempt. The ML classifier also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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/431946152/free-robux-codes-generator-game-hack In PDF document text
    • https://www.sonestad.se/library/repository/coin-master-free-spins-link-today-new_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/minecraft-free-games-no-download_GM479516143.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/roblox-cheat-codes_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/ww-robux_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/rbx-gg-free-robux_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/free-robux-redeem-codes-2021_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/coinmaster-spins_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/my-roblox-account-was-hacked_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/coin-master-free-500-spins-link_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/cute-free-roblox-outfits_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/coin-master-free-spin-and-trading_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/robux-hack-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/free-face-roblox_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/free-spins-coin-master-haktuts_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/what-do-roblox-points-do_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/coinmaster-rewards_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/how-to-hack-elemental-battlegrounds-roblox-2021_GM431946152.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/coin-master-free-link-daily_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/free-spins-coin-master-october-17-2021_GM406889139.pdfIn PDF document text
    • https://www.sonestad.se/library/repository/coin-master-20-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002a5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2A5D 22096 bytes
SHA-256: 89216331382456b8ef527791cfadc3b479ab03302ae95853ca68239439ca89e3
font_01_sfnt_off00005b87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B87 18996 bytes
SHA-256: 5eb0e14e84a96ce31996bcd37de003c05f35194690cf7e19bda56cbb05988c9f

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