Malicious PDF — malware analysis report

Static analysis result for SHA-256 733a78d596c68e72…

MALICIOUS

PDF

42.3 KB Created: 2021-05-25 11:01:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 63e00f906d0b0231089bb8d2788a1fa0 SHA-1: 47b658580140d3f0d6123b6c816e9becc85bade0 SHA-256: 733a78d596c68e72ddd2bd29ff2e2730de6a7692f7c2a3283dd241dad024d6cd
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links designed to lure users with promises of game hacks and generators, redirecting to malicious infrastructure. The ML classifier also flagged the document as malicious. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to deliver a malicious payload or redirect to a phishing site, likely initiated via spearphishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8090

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-hack-someone-on-roblox-game-hack In PDF document text
    • http://fradiomas.com/images/roblox-pink-free-robux_GM431946152.pdfIn PDF document text
    • http://fradiomas.com/images/minecraft-alt-accounts-free_GM479516143.pdfIn PDF document text
    • http://fradiomas.com/images/free-fire-coin-master_GM406889139.pdfIn PDF document text
    • http://fradiomas.com/images/free-robux-without-human-verification-real_GM431946152.pdfIn PDF document text
    • http://fradiomas.com/images/rbx-robux_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
font_00_sfnt_off0000308e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x308E 29604 bytes
SHA-256: be490ba5b0576ddfd5cdadd65c2feff095764ee02ac300ad5c2fc02af3400beb
font_01_sfnt_off00007666.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7666 3884 bytes
SHA-256: 40b61f8938bd710dc29dc58ba3fde91c245a6a69596ec569b4d27c769ca417cf
font_02_sfnt_off0000830d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x830D 18608 bytes
SHA-256: eebf4fd0ce8e014a693b7448b6f63c7fd528199174cddc1a90a23252bff1a633

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