Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f952b014a59ca80…

MALICIOUS

PDF

45.7 KB Created: 2021-05-13 01:31:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 37320d3df6e37f99b9c74603dd178317 SHA-1: 5399eef31711786ea47946ca8fc701304f94dd24 SHA-256: 3f952b014a59ca80ea8ebc3e4b2a890c9e78ed4e18644915bb812196ab759fc7
160 Risk Score

Malware Insights

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

This PDF document employs a common lure of game hacks and free currency to trick users into clicking malicious links. The primary link directs to a known malicious redirector, which in turn hosts further PDF lures. The document's content and embedded links strongly suggest a phishing or scam campaign aimed at driving traffic to malicious infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9432

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/406889139/coin-master-hack-download-apk-game-hack In PDF document text
    • https://hullerkopipagaralam.com/ckfinder/userfiles/files/collect-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://hullerkopipagaralam.com/ckfinder/userfiles/files/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://hullerkopipagaralam.com/ckfinder/userfiles/files/how-much-robux-can-you-get-with-1-million-dollars_GM431946152.pdfIn PDF document text
    • https://www.hullerkopipagaralam.com/ckfinder/userfiles/files/how-to-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • https://www.hullerkopipagaralam.com/ckfinder/userfiles/files/how-to-install-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://hullerkopipagaralam.com/ckfinder/userfiles/files/free-robux-link_GM431946152.pdfIn PDF document text
    • https://hullerkopipagaralam.com/ckfinder/userfiles/files/free-roblox-hack-us_GM431946152.pdfIn PDF document text
    • https://hullerkopipagaralam.com/ckfinder/userfiles/files/coin-master-hack_GM406889139.pdfIn PDF document text
    • https://hullerkopipagaralam.com/ckfinder/userfiles/files/free-coin-master-spins-for-today_GM406889139.pdfIn PDF document text
    • https://hullerkopipagaralam.com/ckfinder/userfiles/files/coin-master-links-free-spins_GM406889139.pdfIn PDF document text
    • https://hullerkopipagaralam.com/ckfinder/userfiles/files/google-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://hullerkopipagaralam.com/ckfinder/userfiles/files/earn-free-robux-for-roblox_GM431946152.pdfIn PDF document text
    • https://hullerkopipagaralam.com/ckfinder/userfiles/files/10-robux_GM431946152.pdfIn PDF document text
    • https://www.hullerkopipagaralam.com/ckfinder/userfiles/files/free-coins-coin-master-daily_GM406889139.pdfIn PDF document text
    • https://www.hullerkopipagaralam.com/ckfinder/userfiles/files/how-to-get-minecraft-for-free-on-ipad_GM479516143.pdfIn PDF document text
    • https://hullerkopipagaralam.com/ckfinder/userfiles/files/best-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://www.hullerkopipagaralam.com/ckfinder/userfiles/files/roblox-jailbreak-hack_GM431946152.pdfIn PDF document text
    • https://hullerkopipagaralam.com/ckfinder/userfiles/files/coin-master-spins_GM406889139.pdfIn PDF document text
    • https://hullerkopipagaralam.com/ckfinder/userfiles/files/get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://hullerkopipagaralam.com/ckfinder/userfiles/files/roblox-games-free_GM431946152.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_003_off000049ce.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49CE 25240 bytes
SHA-256: af43141962add3aaf91f37c00078bbec8cc478564afd24cb4c7a71d0e1bf47ee
font_01_sfnt_off0000844d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x844D 3400 bytes
SHA-256: 4b3e0f36ad1e0c7e3ea5c178fd2b4f097d1e01575fc6a4101a8b520db34dfe07
font_02_sfnt_off00008f77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F77 18472 bytes
SHA-256: a0b4f907e64f54d1e36da46d63ed408052d589db2dcff26c8dd3e6dd691bcc85

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