Malicious PDF — malware analysis report

Static analysis result for SHA-256 df9ee70de0b2ce53…

MALICIOUS

PDF

35.8 KB Created: 2021-05-21 12:03:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: b3fc22d8c4e9490f96701b2567704f5d SHA-1: edbd5ce6fc1b406b2bdd6d33fd9f68c3f1fda9ef SHA-256: df9ee70de0b2ce537a4dc6865392bbe516ef38ddd58674c490d44bb00392dc3b
160 Risk Score

Malware Insights

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

The PDF document contains multiple embedded links that redirect to malicious infrastructure, masquerading as game hacks or generators. The heuristic firings indicate that these links are designed to lure users into clicking, potentially leading to further exploitation or malware download. Although no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a malicious intent to redirect users to harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9492

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/479516143/free-minecraft-printables-food-labels-game-hack In PDF document text
    • http://kompanievska-selrada.gov.ua/images/coin-master-download-hack-ios_GM406889139.pdfIn PDF document text
    • http://kompanievska-selrada.gov.ua/images/doctor-louie-roblox_GM431946152.pdfIn PDF document text
    • http://kompanievska-selrada.gov.ua/images/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://kompanievska-selrada.gov.ua/images/infinite-robux_GM431946152.pdfIn PDF document text
    • http://kompanievska-selrada.gov.ua/images/free-spins-for-coin-master-hack_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
stream_002_off000032e6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x32E6 24788 bytes
SHA-256: 496e1d649066eb9c259a27115329b18156f6afa0d63a321cc5d6ebe5ae0cd482
font_01_sfnt_off00006ac6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AC6 18272 bytes
SHA-256: f2c529c176ea6290bd871c2fd1a1a72e1d93e196016b8d790adf98aeb938da6a

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