Malicious PDF — malware analysis report

Static analysis result for SHA-256 42d5c0aeb2556eb0…

MALICIOUS

PDF

48.9 KB Created: 2021-06-03 05:47:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 4884bde8f2507a76b93378a57d14c379 SHA-1: 64459070ba5a9c89169968c7123e4c1356c4be1c SHA-256: 42d5c0aeb2556eb047b61ddba682774997f114f77228a081e012e5fb28eac19a
160 Risk Score

Malware Insights

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

This PDF document contains multiple links that redirect to a website advertising game hacks, a common lure for distributing malware. The ML classifier also flagged this PDF with high confidence. The embedded URLs suggest a phishing or social engineering attempt to trick users into downloading potentially malicious files.

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.online/app/406889139/https-iosgodscom-topic-20214coinmasterhack-game-hack In PDF document text
    • http://stomatoloska-ordinacija-rijeka.com/files/minecraft-handbook_GM479516143.pdfIn PDF document text
    • https://www.stomatoloska-ordinacija-rijeka.com/files/minecraft-survival-hacks_GM479516143.pdfIn PDF document text
    • http://stomatoloska-ordinacija-rijeka.com/files/how-to-get-free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • http://stomatoloska-ordinacija-rijeka.com/files/roblox-com-free-play_GM431946152.pdfIn PDF document text
    • http://stomatoloska-ordinacija-rijeka.com/files/pokemon-go-basic-vs-premium_GM1094591345.pdfIn PDF document text
    • https://www.stomatoloska-ordinacija-rijeka.com/files/www-free-robux_GM431946152.pdfIn PDF document text
    • https://www.stomatoloska-ordinacija-rijeka.com/files/minecraft-free-unblocked_GM479516143.pdfIn PDF document text
    • https://www.stomatoloska-ordinacija-rijeka.com/files/how-to-get-free-roebucks-in-roblox_GM431946152.pdfIn PDF document text
    • https://www.stomatoloska-ordinacija-rijeka.com/files/free-robux-obby_GM431946152.pdfIn PDF document text
    • https://www.stomatoloska-ordinacija-rijeka.com/files/minecraft-java-edition-key-free_GM479516143.pdfIn PDF document text
    • http://stomatoloska-ordinacija-rijeka.com/files/free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.stomatoloska-ordinacija-rijeka.com/files/free-robux-glitch_GM431946152.pdfIn PDF document text
    • http://stomatoloska-ordinacija-rijeka.com/files/tiktok-free-comments_GM835599320.pdfIn PDF document text
    • https://www.stomatoloska-ordinacija-rijeka.com/files/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • https://www.stomatoloska-ordinacija-rijeka.com/files/flip-master-coins-hack_GM406889139.pdfIn PDF document text
    • https://www.stomatoloska-ordinacija-rijeka.com/files/coin-master-hack-september-2021_GM406889139.pdfIn PDF document text
    • http://stomatoloska-ordinacija-rijeka.com/files/coin-master-hack-version-2021-free-download_GM406889139.pdfIn PDF document text
    • http://stomatoloska-ordinacija-rijeka.com/files/how-to-hack-in-roblox-prison-life_GM431946152.pdfIn PDF document text
    • http://stomatoloska-ordinacija-rijeka.com/files/how-to-get-free-skins-in-minecraft_GM479516143.pdfIn PDF document text
    • http://stomatoloska-ordinacija-rijeka.com/files/coin-master-haktuts_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000053df.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x53DF 25368 bytes
SHA-256: 1947c37868688eecb18f89f304ac881ff68fb94c9f8376659676993700b7f49e
font_01_sfnt_off00008c9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C9D 3620 bytes
SHA-256: d859fd77b85f3b3415639a87e8809ecf698e2c52ea4a2633c07d9e96259cae8a
font_02_sfnt_off00009961.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9961 19244 bytes
SHA-256: 5fcad0a4949df92a3abf0f84d81e48d9e083419a4527ff136f7d271150cd74a1

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