Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f2eafd203c07fe8…

MALICIOUS

PDF

37.8 KB Created: 2021-05-20 16:26:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: e6904bc7385fffafe266f37bb7dd4aba SHA-1: 299a0ff2128e356a770616dd442c89db6611d3c9 SHA-256: 9f2eafd203c07fe8d7917ffdf2fc7e02bf8486cde19decf325d2435b6d94af62
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to a website offering 'Coin Master Free Spins Daily' and 'game hacks', which is a common lure for malicious content. The ML classifier also flagged this PDF as malicious. The embedded URLs suggest the primary goal is to redirect the user to potentially malicious or scam-related content.

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/coin-master-free-spins-daily-game-hack In PDF document text
    • https://www.elearning-ganjil.massimbangkulon.sch.id/__statics/gudangsoal/files/earn-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.elearning-ganjil.massimbangkulon.sch.id/__statics/gudangsoal/files/rbx-gg-free-robux_GM431946152.pdfIn PDF document text
    • https://www.elearning-ganjil.massimbangkulon.sch.id/__statics/gudangsoal/files/free-spins-coin-master-unlimited_GM406889139.pdfIn PDF document text
    • https://www.elearning-ganjil.massimbangkulon.sch.id/__statics/gudangsoal/files/easy-robux-hack_GM431946152.pdfIn PDF document text
    • https://www.elearning-ganjil.massimbangkulon.sch.id/__statics/gudangsoal/files/where-to-get-free-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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003548.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3548 25800 bytes
SHA-256: 19dcf260dd75a1cd30850e929df4dbcb3c40569f1cd219c4f37d6433f85fa15d
font_01_sfnt_off00006f4b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F4B 19384 bytes
SHA-256: f676de5704b20be93472efd0d68099361942c20571dc433ecbde2fd900b21d54

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