Malicious PDF — malware analysis report

Static analysis result for SHA-256 95a167c76eae7d5f…

MALICIOUS

PDF

44.8 KB Created: 2021-05-19 07:40:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 9f46e769f167f139ed55c457b11d5f4f SHA-1: abead809791f2706972840f564b5a02cb390afd2 SHA-256: 95a167c76eae7d5f780bab526a48cd1267b69271cc6f7d3f41d5b3b2afcf0b23
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links designed to lure users into clicking on them by promising free game hacks or followers. These links redirect to known malicious infrastructure, indicating a phishing or scam attempt. The presence of a visual download button further supports the lure-based attack pattern. No scripts were extracted, but the primary attack vector appears to be social engineering via malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

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/835599320/tiktok-free-folowers-free-game-hack In PDF document text
    • https://gafaseo.com/images/best-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://gafaseo.com/images/free-minecraft-for-kids_GM479516143.pdfIn PDF document text
    • https://gafaseo.com/images/coin-master-tiradas-gratis_GM406889139.pdfIn PDF document text
    • https://gafaseo.com/images/apps-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://gafaseo.com/images/get-free-robux_GM431946152.pdfIn PDF document text
    • https://gafaseo.com/images/demon-roblox_GM431946152.pdfIn PDF document text
    • https://gafaseo.com/images/coin-master-free-cards-2021_GM406889139.pdfIn PDF document text
    • https://gafaseo.com/images/free-spins-coin-master-links-blogspot_GM406889139.pdfIn PDF document text
    • https://gafaseo.com/images/coin-master-free-food_GM406889139.pdfIn PDF document text
    • https://gafaseo.com/images/roblox-army-robux_GM431946152.pdfIn PDF document text
    • https://gafaseo.com/images/freerobux-co_GM431946152.pdfIn PDF document text
    • https://gafaseo.com/images/free-robux-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://gafaseo.com/images/coin-master-hack-without-human-verification-india_GM406889139.pdfIn PDF document text
    • https://gafaseo.com/images/roblox-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • https://gafaseo.com/images/free-robux-with-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://gafaseo.com/images/pig-master-coin-master-free-spin_GM406889139.pdfIn PDF document text
    • https://gafaseo.com/images/coin-master-village-cost_GM406889139.pdfIn PDF document text
    • https://gafaseo.com/images/minecraft-games-online-free-no-download_GM479516143.pdfIn PDF document text
    • https://gafaseo.com/images/free-robux-kid-friendly_GM431946152.pdfIn PDF document text
    • https://gafaseo.com/images/descargar-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004581.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4581 27504 bytes
SHA-256: f73d3fdfd963dde0d74695ba3359c0108e7d8947dd67e44144acfc7d817de5df
font_01_sfnt_off00008432.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8432 2912 bytes
SHA-256: 02b35010e2614e3cc95ac6414c49295350c91fdfcc4b4cad27ffdbc10e80df7f
font_02_sfnt_off00008e2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E2F 17692 bytes
SHA-256: 985d22be7fd5b97f33a85e96ef712d71c4ffd5a4d847a5a632f6701b905c79a8