Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2ae98e66f823ce9…

MALICIOUS

PDF

33.3 KB Created: 2021-07-04 02:42:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: d8f81d7881abbf3f8198b6891404895f SHA-1: aeb8c283e8d4010d71a30f56ab18450bb36326ba SHA-256: f2ae98e66f823ce92ce3bacb482ad8d4554ae36e822a3784fb0d804f1a83663c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to known malicious infrastructure, disguised as game hacks and generators. The document body and heuristics indicate a lure to download or access potentially unwanted or malicious content. No scripts were extracted, but the embedded URLs are the primary indicators of malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/406889139/moon-active-game-hack In PDF document text
    • http://www.valenciamaids.com/userfiles/files/cheat-roblox-building-simulator_GM431946152.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/coin-master-free-spins-link-today-hack_GM406889139.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/robux-earning-websites_GM431946152.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/how-do-u-hack-roblox_GM431946152.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/claim-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/trigon-cheat-roblox_GM431946152.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/minecraft-116-apk-download_GM479516143.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/minecraft-hack-2021_GM479516143.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/how-to-hack-minecraft-pe_GM479516143.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/free-coinmaster-spins_GM406889139.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/minecraft-xbox-free_GM479516143.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/coin-master-free-spins-link-today-facebook_GM406889139.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/coin-master-fan_GM406889139.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/master-coin-free-link_GM406889139.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/minecraft-pe-hacks-ios_GM479516143.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/roblox-free-robux-no-survey-2021_GM431946152.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/coin-master-hack-ios-12_GM406889139.pdfIn PDF document text
    • http://www.valenciamaids.com/userfiles/files/roblox-jailbreak-how-to-get-free-lamborghini_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
font_00_sfnt_off00002e4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E4E 22476 bytes
SHA-256: fb9cc620f81262bf9fdc5abbae9d4849f91f287896362d439571a5e7702094ec
font_01_sfnt_off0000605a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x605A 17948 bytes
SHA-256: dd313bcaa0f37a9605846c97e9f8dd50d3078f96f15ee75ccbe1a2bfe611c1c1

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