Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f67e52eb316fd53…

MALICIOUS

PDF

34.8 KB Created: 2021-07-03 15:59:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 51ebbafb01fc785d7c3cfa7b215ad59c SHA-1: 053dcb2640e10bbdaae402cd8893eab64a14511d SHA-256: 1f67e52eb316fd53879b9f103bef508409f606f05f191c0752da85418a89030b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of free game currency and hacks to entice users. It contains links to known malicious redirectors, such as http://netcdn.tw/app/406889139/how-to-get-free-spins-on-coin-master-blogspot-game-hack, which in turn host further malicious PDF files. The document's structure and embedded URLs suggest it is part of a phishing campaign designed to lead users to potentially harmful content.

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/how-to-get-free-spins-on-coin-master-blogspot-game-hack In PDF document text
    • https://daring.mtsn1lamsel.com/__statics/gudangsoal/files/how-to-download-roblox-on-computer-for-free_GM431946152.pdfIn PDF document text
    • https://daring.mtsn1lamsel.com/__statics/gudangsoal/files/free-roblox-exploit-2021-no-virus_GM431946152.pdfIn PDF document text
    • https://daring.mtsn1lamsel.com/__statics/gudangsoal/files/free-coin-master-stuff_GM406889139.pdfIn PDF document text
    • https://daring.mtsn1lamsel.com/__statics/gudangsoal/files/roblox-robux-admin-hack_GM431946152.pdfIn PDF document text
    • https://daring.mtsn1lamsel.com/__statics/gudangsoal/files/minecraft-hacks-wurst_GM479516143.pdfIn PDF document text
    • https://daring.mtsn1lamsel.com/__statics/gudangsoal/files/heroes-online-roblox_GM431946152.pdfIn PDF document text
    • https://daring.mtsn1lamsel.com/__statics/gudangsoal/files/how-to-hack-roblox-on-kindle-fire_GM431946152.pdfIn PDF document text
    • https://daring.mtsn1lamsel.com/__statics/gudangsoal/files/coin-master-hack-safe_GM406889139.pdfIn PDF document text
    • https://daring.mtsn1lamsel.com/__statics/gudangsoal/files/roblox-hacked-version-download_GM431946152.pdfIn PDF document text
    • https://daring.mtsn1lamsel.com/__statics/gudangsoal/files/pubg-uc-mongolia_GM1330123889.pdfIn PDF document text
    • https://daring.mtsn1lamsel.com/__statics/gudangsoal/files/how-do-get-free-robux-in-roblox_GM431946152.pdfIn PDF document text
    • https://daring.mtsn1lamsel.com/__statics/gudangsoal/files/free-robux-live_GM431946152.pdfIn PDF document text
    • https://daring.mtsn1lamsel.com/__statics/gudangsoal/files/free-coins-and-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://daring.mtsn1lamsel.com/__statics/gudangsoal/files/daily-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://daring.mtsn1lamsel.com/__statics/gudangsoal/files/free-radio-roblox_GM431946152.pdfIn PDF document text
    • https://daring.mtsn1lamsel.com/__statics/gudangsoal/files/get-free-robux-info_GM431946152.pdfIn PDF document text
    • https://daring.mtsn1lamsel.com/__statics/gudangsoal/files/roblox-games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • https://daring.mtsn1lamsel.com/__statics/gudangsoal/files/facebook-coin-master_GM406889139.pdfIn PDF document text
    • https://daring.mtsn1lamsel.com/__statics/gudangsoal/files/free-robux-master_GM431946152.pdfIn PDF document text
    • https://daring.mtsn1lamsel.com/__statics/gudangsoal/files/roblox-free-no-sign-in_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_off0000309e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x309E 23068 bytes
SHA-256: 343e079ec9a1218bc509242626197b2351edcaa56f6d8ac7261a281bc56f3d7b
font_01_sfnt_off0000648f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x648F 18628 bytes
SHA-256: ae3a975d5d5b6b59e53d049ff91e6030f04995f7480aa257ae690626f2897a83

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