Malicious PDF — malware analysis report

Static analysis result for SHA-256 982183e111e5c003…

MALICIOUS

PDF

37.8 KB Created: 2021-05-21 16:01:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 056cbdb4812e66a22c96dd4efc7d4ea4 SHA-1: aec6238be3881fd61cbc869999acdec866661c78 SHA-256: 982183e111e5c003c2eddab5db0a5c8b5a68def456aae28794effd05cf16aeaa
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that lead to known malicious redirector infrastructure, specifically designed to lure users with promises of free game items or hacks. The document body and heuristics indicate a clear intent to trick users into visiting these sites, likely as a first step in a phishing or malware distribution chain. No scripts were extracted, but the presence of malicious redirectors and the lure content strongly suggest a phishing or scam campaign.

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/431946152/roblox-land-free-robux-game-hack In PDF document text
    • https://allpi.int/images/coin-master-daily-free-spin-app_GM406889139.pdfIn PDF document text
    • https://allpi.int/images/how-to-get-free-robux-without-verifying-2021_GM431946152.pdfIn PDF document text
    • https://allpi.int/images/minecraft-apk-free-download_GM479516143.pdfIn PDF document text
    • https://allpi.int/images/coin-master-free-spins-link-today-haktuts_GM406889139.pdfIn PDF document text
    • https://allpi.int/images/how-to-get-free-robux-on-phone-2021_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off000035ed.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x35ED 25672 bytes
SHA-256: 3688c7857f869131cb99a982151488c40ae06dcd68d2a3312833408ec89e78be
font_01_sfnt_off000071e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71E6 18492 bytes
SHA-256: dd1922fe1cc281356c7e312f91778e191ebdc244bf13f8823862483f595251c7

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