Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f492b0016df593d…

MALICIOUS

PDF

50.5 KB Created: 2021-05-15 02:01:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-25
MD5: 150998eeda3997079a0c325ca91e2688 SHA-1: 6a7e29a1ee028674b108d4005ebb01f2d54b7f3b SHA-256: 5f492b0016df593dcb381e5c8b21d499712619592ef9b0160b799c32edbd30b4
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to known malicious infrastructure, specifically promoting game hacks and generators. The document body and embedded URLs suggest a lure for obtaining in-game currency or cheats, which is a common social engineering tactic. The ML classifier also flagged this PDF as malicious, reinforcing the observed malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9349

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.xyz/app/431946152/how-can-you-get-robux-game-hack In PDF document text
    • http://britishcomics.com/images/minecraft-116-apk-download_GM479516143.pdfIn PDF document text
    • http://britishcomics.com/images/how-to-get-free-clothing-on-roblox_GM431946152.pdfIn PDF document text
    • http://britishcomics.com/images/coin-master-free-spins-link-2021-no-verification-deutsch_GM406889139.pdfIn PDF document text
    • http://britishcomics.com/images/roblox-c9m_GM431946152.pdfIn PDF document text
    • http://britishcomics.com/images/hackear-juego-coin-master_GM406889139.pdfIn PDF document text
    • http://britishcomics.com/images/free-spin-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://britishcomics.com/images/coin-master-cheats-2021_GM406889139.pdfIn PDF document text
    • http://britishcomics.com/images/how-to-get-more-spins-on-coin-master-for-free_GM406889139.pdfIn PDF document text
    • http://britishcomics.com/images/free-spins-for-coin-masters_GM406889139.pdfIn PDF document text
    • http://britishcomics.com/images/robux-fun-hack_GM431946152.pdfIn PDF document text
    • http://britishcomics.com/images/coin-master-mod-apk-latest-hack-with-unlimited-free-spins_GM406889139.pdfIn PDF document text
    • http://britishcomics.com/images/free-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • http://britishcomics.com/images/download-minecraft-free-hiapphere_GM479516143.pdfIn PDF document text
    • http://britishcomics.com/images/free-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • http://britishcomics.com/images/how-to-get-free-robux-for-kids_GM431946152.pdfIn PDF document text
    • http://britishcomics.com/images/coin-master-link-daily-get-free-spins-amp_GM406889139.pdfIn PDF document text
    • http://britishcomics.com/images/coin-master-gold-cards-hack-2021_GM406889139.pdfIn PDF document text
    • http://britishcomics.com/images/how-to-hack-people-on-roblox_GM431946152.pdfIn PDF document text
    • http://britishcomics.com/images/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
    • http://britishcomics.com/images/free-100-robux_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
font_00_sfnt_off000048f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x48F4 27084 bytes
SHA-256: b5834d086d56cfae4d3c926ece462d537c384a59fdf41ee7fad6a280939ab8a1
font_01_sfnt_off00008798.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8798 8376 bytes
SHA-256: 092b7a11ef2af93d0b61b37032e6f669359ea7bc5bcb682d43a712f599a5ca39
font_02_sfnt_off0000a267.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA267 18508 bytes
SHA-256: e001fb7f5401862ae7bfe8451ef812ade6eb76ff5b39a99ee1f5160965f9e068

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