Malicious PDF — malware analysis report

Static analysis result for SHA-256 58cf78cad80f7818…

MALICIOUS

PDF

42.6 KB Created: 2021-05-11 03:27:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: c3d8b3e207f5d7ff55b75d067a966429 SHA-1: efd32854a66a7cd95d8f8ff235807f176a00167b SHA-256: 58cf78cad80f78188760f1c3763b67c79c87762f1039f7e45575226eae3d9863
182 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous links to external websites that promise game hacks and generators, such as 'minecraft-ios-mods-game-hack'. The heuristic firings indicate a 'PDF link farm' and a 'game hack redirector lure', suggesting the primary purpose is to drive traffic to malicious or deceptive sites. The document body, though partially corrupted, also contains embedded URLs pointing to similar lures.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 6

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • PDF links to a 'free generator / game hack' redirector high 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.
  • Remote-support tool lure high SE_REMOTE_SUPPORT_LURE
    Document instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/minecraft-ios-mods-game-hack PDF link annotation
    • http://unionmusicaldebenidorm.com/images/kuso-icu-roblox-hack_GM431946152.pdfIn PDF document text
    • http://unionmusicaldebenidorm.com/images/coin-master-hack-online-no-human-verification_GM406889139.pdfIn PDF document text
    • http://unionmusicaldebenidorm.com/images/7-year-old-roblox_GM431946152.pdfIn PDF document text
    • http://unionmusicaldebenidorm.com/images/coin-master-free-spins-and-coins-link-blogspot_GM406889139.pdfIn PDF document text
    • http://unionmusicaldebenidorm.com/images/free-robux-website_GM431946152.pdfIn PDF document text
    • http://unionmusicaldebenidorm.com/images/free-robux-generator-without-human-verification_GM431946152.pdfIn PDF document text
    • http://unionmusicaldebenidorm.com/images/coin-master-hack-without-verification-code-2021_GM406889139.pdfIn PDF document text
    • http://unionmusicaldebenidorm.com/images/roblox-inappropriate_GM431946152.pdfIn PDF document text
    • http://unionmusicaldebenidorm.com/images/roblox-games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://unionmusicaldebenidorm.com/images/games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://unionmusicaldebenidorm.com/images/coin-master-free-spins-for-today_GM406889139.pdfIn PDF document text
    • http://unionmusicaldebenidorm.com/images/how-to-get-free-coins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://unionmusicaldebenidorm.com/images/how-to-get-minecraft-dungeons-for-free_GM479516143.pdfIn PDF document text
    • http://unionmusicaldebenidorm.com/images/free-robux-generator-no-survey-no-download-no-human-verification_GM431946152.pdfIn PDF document text
    • http://unionmusicaldebenidorm.com/images/get-free-spins-on-coin-master-links_GM406889139.pdfIn PDF document text
    • http://unionmusicaldebenidorm.com/images/roblox-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://unionmusicaldebenidorm.com/images/coin-master-spin-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • http://unionmusicaldebenidorm.com/images/is-there-any-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://unionmusicaldebenidorm.com/images/robux-hacks-2021_GM431946152.pdfIn PDF document text
    • http://unionmusicaldebenidorm.com/images/free-robux-hack_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_off000049e8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49E8 26180 bytes
SHA-256: 6ef814ff11ff02a5f39494b83572bd059602b482d48a8401506858efadc4882c
font_01_sfnt_off00008584.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8584 17884 bytes
SHA-256: 69b1a480a514f825ff414667447eb1606ecae76b686202ffdf0553eb000475e9

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