Malicious PDF — malware analysis report

Static analysis result for SHA-256 039c425acf85870e…

MALICIOUS

PDF

41.3 KB Created: 2021-05-13 14:46:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 6ec8d89f8cf9a7f3a9c7fa8a2eeb265a SHA-1: 49340ed7176b6e8f5aec9db0117ad14355d9dd4e SHA-256: 039c425acf85870e4ab840615fbef79ccc68bdc74cd2caa80c34e85cc1837fc2
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains multiple links to known malicious redirectors and infrastructure, disguised as game hacks and free item generators. The heuristic firings confirm the presence of malicious redirector links and a lure for game hacks. The document body, though partially obfuscated, contains URLs that reinforce the lure of free game-related content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/optifine-pe-game-hack In PDF document text
    • https://shimony.net/images/roblox-free-items_GM431946152.pdfIn PDF document text
    • https://shimony.net/images/coin-master-free-bonus_GM406889139.pdfIn PDF document text
    • https://shimony.net/images/coin-master-hacks_GM406889139.pdfIn PDF document text
    • https://shimony.net/images/free-robux-no-verification-no-survey_GM431946152.pdfIn PDF document text
    • https://shimony.net/images/roblox-moderators_GM431946152.pdfIn PDF document text
    • https://shimony.net/images/coin-master-hack-no-verification-no-signup_GM406889139.pdfIn PDF document text
    • https://shimony.net/images/minecraft-bedrock-hacks_GM479516143.pdfIn PDF document text
    • https://shimony.net/images/how-to-get-minecraft-for-free-on-tablet_GM479516143.pdfIn PDF document text
    • https://shimony.net/images/coin-master-hack-apk-free-download_GM406889139.pdfIn PDF document text
    • https://shimony.net/images/100-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://shimony.net/images/how-can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • https://shimony.net/images/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • https://shimony.net/images/minecraft-hacked-client-download_GM479516143.pdfIn PDF document text
    • https://shimony.net/images/free-coin-master-hacks-no-verification-or-survey_GM406889139.pdfIn PDF document text
    • https://shimony.net/images/freegames911com-coinmastertipsandcheats2021freecoinsandspins_GM406889139.pdfIn PDF document text
    • https://shimony.net/images/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
    • https://shimony.net/images/how-to-get-free-premium-roblox_GM431946152.pdfIn PDF document text
    • https://shimony.net/images/roblox-hack-app_GM431946152.pdfIn PDF document text
    • https://shimony.net/images/how-to-hack-and-get-free-robux_GM431946152.pdfIn PDF document text
    • https://shimony.net/images/free-robux-2021-no-verification_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_003_off00004a22.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A22 24324 bytes
SHA-256: 87b28d7c43b09b6ef95a8d84bf03c573ce1f515c2fb113815165b134ebe999e7
font_01_sfnt_off000080ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80EC 17672 bytes
SHA-256: 5a469ca17a8c140357c1150986cbf8b325a348879e3a8ed2f5f73ca7af5c2fd6

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