Malicious PDF — malware analysis report

Static analysis result for SHA-256 48f495c13eb10b42…

MALICIOUS

PDF

51.1 KB Created: 2021-06-01 00:06:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-23
MD5: 332eb0a748c48136fd04c41ae049de48 SHA-1: b20f0cd6ebad03410a1994e5a3f5f1c6dde6d2bf SHA-256: 48f495c13eb10b4246f9e1027178fede3a1f43cbfdb603427eec9839e830bb7e
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous links to external websites, including a primary redirector identified as malicious. The document body and heuristics suggest a lure for game hacks and generators, which is a common tactic for distributing malware or conducting phishing. The presence of multiple SEO-optimized PDF links further indicates an attempt to drive traffic to potentially malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9724

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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/como-descargar-roblox-hackeado-game-hack In PDF document text
    • https://www.dhi.edu.gh/wp-content/uploads/fsqm-files/how-to-download-minecraft-for-free-on-iphone_GM479516143.pdfIn PDF document text
    • https://www.dhi.edu.gh/wp-content/uploads/fsqm-files/free-tiktok-likes-generator_GM835599320.pdfIn PDF document text
    • https://www.dhi.edu.gh/wp-content/uploads/fsqm-files/how-to-get-minecraft-for-free-on-mac_GM479516143.pdfIn PDF document text
    • https://www.dhi.edu.gh/wp-content/uploads/fsqm-files/robux-matchcomfree-robux_GM431946152.pdfIn PDF document text
    • https://www.dhi.edu.gh/wp-content/uploads/fsqm-files/how-to-get-hacks-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.dhi.edu.gh/wp-content/uploads/fsqm-files/coin-master-free-spin-and-coin-links_GM406889139.pdfIn PDF document text
    • https://www.dhi.edu.gh/wp-content/uploads/fsqm-files/free-ways-to-get-robux_GM431946152.pdfIn PDF document text
    • https://www.dhi.edu.gh/wp-content/uploads/fsqm-files/free-robux-no-human-verification-or-survey-or-download_GM431946152.pdfIn PDF document text
    • https://www.dhi.edu.gh/wp-content/uploads/fsqm-files/is-tiktok-free_GM835599320.pdfIn PDF document text
    • https://www.dhi.edu.gh/wp-content/uploads/fsqm-files/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://www.dhi.edu.gh/wp-content/uploads/fsqm-files/how-to-have-free-hair-in-roblox_GM431946152.pdfIn PDF document text
    • https://www.dhi.edu.gh/wp-content/uploads/fsqm-files/robux-hack-site_GM431946152.pdfIn PDF document text
    • https://www.dhi.edu.gh/wp-content/uploads/fsqm-files/how-to-get-free-tiktok-fans-without-human-verification_GM835599320.pdfIn PDF document text
    • https://www.dhi.edu.gh/wp-content/uploads/fsqm-files/roblox-how-to-get-free-vip-in-fashon-frenzy_GM431946152.pdfIn PDF document text
    • https://www.dhi.edu.gh/wp-content/uploads/fsqm-files/mobihack-net-roblox-hack_GM431946152.pdfIn PDF document text
    • https://www.dhi.edu.gh/wp-content/uploads/fsqm-files/tiktok-likes-free_GM835599320.pdfIn PDF document text
    • https://www.dhi.edu.gh/wp-content/uploads/fsqm-files/free-tiktok-likes-2021_GM835599320.pdfIn PDF document text
    • https://www.dhi.edu.gh/wp-content/uploads/fsqm-files/how-to-create-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • https://www.dhi.edu.gh/wp-content/uploads/fsqm-files/free-rap-lyrics-for-robux_GM431946152.pdfIn PDF document text
    • https://www.dhi.edu.gh/wp-content/uploads/fsqm-files/coin-master-free-spins-2021_GM406889139.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_off000054c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x54C2 28352 bytes
SHA-256: 15c312015538d4ae50b8e2be52e59a5775852affebba35781725c2bbb09af0b3
font_01_sfnt_off000095ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x95AE 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_02_sfnt_off0000a2c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA2C0 19072 bytes
SHA-256: 896cdeb10499723520e6686a7edaa685cf821d7abd9c1866bf7e5a65b8f2cdcc

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