Malicious PDF — malware analysis report

Static analysis result for SHA-256 61079acc51bb6484…

MALICIOUS

PDF

35.8 KB Created: 2021-05-25 08:11:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 704c900d479280fd4b6012ae32018e23 SHA-1: f9286ff38c2a9d42e1d267adcfdab7c78f58eed1 SHA-256: 61079acc51bb64844428c2eba4a1d9a9d434130ad62de09434f9d79b450b6098
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to malicious redirectors, disguised as free game hacks and generators, which is a common social engineering tactic. The ML classifier also strongly indicated maliciousness. The document body and embedded URLs suggest a lure for free game-related content, likely leading to further malware downloads or phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

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.
  • PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED
    The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PDFSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
  • 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/479516143/minecraft-java-edition-download-free-game-hack In PDF document text
    • http://no-no-gos.de/images/free-robux-no-verification-no-download-2021_GM431946152.pdfIn PDF document text
    • http://no-no-gos.de/images/how-to-make-a-private-server-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://no-no-gos.de/images/minecraft-hacked-client-18_GM479516143.pdfIn PDF document text
    • http://no-no-gos.de/images/robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://no-no-gos.de/images/free-coins-and-spins-coin-master_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003345.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3345 24012 bytes
SHA-256: d18bb74518009fc2ab8e7050c048a80a510739ed80c56ffce5d57996e581ade5
font_01_sfnt_off00006a12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A12 18572 bytes
SHA-256: b44bcce2d8515c0d099a66814c088ed689798a3dbc3c1364cf14b7c888151b67

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