Malicious PDF — malware analysis report

Static analysis result for SHA-256 afa74f10a949ccbf…

MALICIOUS

PDF

37.8 KB Created: 2021-05-22 12:34:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: ccec0c6dca9f3c47ee0435ce6f370427 SHA-1: dac7044fa9f5aefc5a7003663b28f7b2bd1d826c SHA-256: afa74f10a949ccbf3a4e3eb28e7b66132e309621468e16ec6155e75a01d83625
160 Risk Score

Malware Insights

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

The PDF document contains multiple links that redirect to malicious infrastructure, disguised as game hacks or generators. The heuristic firings indicate that the PDF is designed to lure users into clicking these links, likely to download further malware or redirect to phishing sites. The presence of embedded URLs and the ML classifier's high confidence score support this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9407

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/how-do-i-get-free-spins-on-coin-master-game-hack In PDF document text
    • https://www.jogjamanisfoods.com/ckfinder/userfiles/files/how-to-get-free-items-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.jogjamanisfoods.com/ckfinder/userfiles/files/free-roblox-followers-generator_GM431946152.pdfIn PDF document text
    • https://www.jogjamanisfoods.com/ckfinder/userfiles/files/tiktok-likes-free_GM835599320.pdfIn PDF document text
    • https://www.jogjamanisfoods.com/ckfinder/userfiles/files/coin-master-free-spin-realme-products_GM406889139.pdfIn PDF document text
    • https://www.jogjamanisfoods.com/ckfinder/userfiles/files/best-free-hacked-client_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003534.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3534 25104 bytes
SHA-256: b24dc16702fd47c04dc4605808ec2b7efbc76a0631e82ebb167254358549f29e
font_01_sfnt_off00006f72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F72 19384 bytes
SHA-256: bb4bf41a4367b18e6f1b6df2491f0e54355092f347805b309837e4d65da3f7e0

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