Malicious PDF — malware analysis report

Static analysis result for SHA-256 b28807149160d269…

MALICIOUS

PDF

38.9 KB Created: 2021-05-21 14:48:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: d7654749a251c867afed16f6c545733d SHA-1: 1803d46cef44316eec0e52ef9e833fc3b575f0c3 SHA-256: b28807149160d26987678d8f89e8fef94160a77d51ffc0cd7ad951322f582b5b
160 Risk Score

Malware Insights

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

The PDF contains multiple links to known malicious redirectors and lures users with 'free generator / game hack' content. The ML classifier also flagged the document as malicious. The embedded URLs suggest a phishing or malware distribution attempt, likely initiated via spearphishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8060

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/how-to-get-free-robux-games-game-hack In PDF document text
    • http://pwpyemen.org/images/get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://pwpyemen.org/images/free-robux-com-real_GM431946152.pdfIn PDF document text
    • http://pwpyemen.org/images/robux-generator-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://pwpyemen.org/images/free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://pwpyemen.org/images/minecraft-114-download_GM479516143.pdfIn PDF document text
    • https://rblx.landIn 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
font_00_sfnt_off00003110.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3110 26372 bytes
SHA-256: 55c6c0bb23e1c126617fd5ab30644cb659f932b34a4433b12657ace52c5fff1d
font_01_sfnt_off00006b27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B27 2824 bytes
SHA-256: 94c1b019735d7e491765340abe50b2897410e2ec65ecf141c08bd9f2220897c4
font_02_sfnt_off000074d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74D5 18768 bytes
SHA-256: f0658a260a8345a08039bbf50682235c712e1d6bfd9b3eebd82ad720f29012b5

Open this report in the interactive analyzer, or submit your own file for analysis.