Malicious PDF — malware analysis report

Static analysis result for SHA-256 037bbf717364ab6d…

MALICIOUS

PDF

45.6 KB Created: 2021-06-11 02:02:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 906b289918f304cb2df20837fc09f4de SHA-1: d218077c111240c59963ef531a2b1bbd5a63735b SHA-256: 037bbf717364ab6d74c078d033a211c60b6676ec84ab328ff3a9631e63d8a90c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors and lures users with promises of game hacks and free generators. The document body and embedded URLs suggest a phishing attempt to redirect users to potentially malicious sites. No scripts were extracted, but the presence of malicious links and the ML classifier's high confidence indicate a high likelihood of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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.tw/app/431946152/how-to-hack-roblox-jailbreak-beta-game-hack In PDF document text
    • http://reggieslockandkey.com/images/how-can-i-get-free-coinsn-coin-master_GM406889139.pdfIn PDF document text
    • https://reggieslockandkey.com/images/blogger-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://reggieslockandkey.com/images/minecraft-games-free-download_GM479516143.pdfIn PDF document text
    • http://reggieslockandkey.com/images/free-spins-generated-from-coin-master_GM406889139.pdfIn PDF document text
    • https://reggieslockandkey.com/images/coin-master-real-free-spins_GM406889139.pdfIn PDF document text
    • https://reggieslockandkey.com/images/how-to-get-free-robux-easy-2021_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/pokemon-go-free-vs-ultra_GM1094591345.pdfIn PDF document text
    • http://reggieslockandkey.com/images/coin-master-hack-spins-game-download_GM406889139.pdfIn PDF document text
    • https://reggieslockandkey.com/images/roblox-diary-of-a-noob-download-prison-life-free_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/how-to-hack-roblox-to-get-robux_GM431946152.pdfIn PDF document text
    • http://reggieslockandkey.com/images/free-robux-games-on-roblox_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/redeem-your-free-robux-at-http-get-robux-eu5-net_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/how-to-get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/free-roebucks_GM431946152.pdfIn PDF document text
    • http://reggieslockandkey.com/images/roblox-dominus-free_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://reggieslockandkey.com/images/oprewards-robux_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/how-to-make-a-minecraft-bedrock-server-for-free_GM479516143.pdfIn PDF document text
    • http://reggieslockandkey.com/images/how-to-hack-someone-on-roblox_GM431946152.pdfIn PDF document text
    • http://reggieslockandkey.com/images/how-to-get-free-robux-on-roblox-2021_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_004_off00004f69.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F69 27576 bytes
SHA-256: ee8037f5b6b753c50bf38f281c284a155279c1f6171a4028c6be98791217c4c4
font_01_sfnt_off00008e59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E59 18736 bytes
SHA-256: d7d2e8c2c491382876d1bbf76a6921e19a786ec28b20e906d7dd7cab4f730fca

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