Malicious PDF — malware analysis report

Static analysis result for SHA-256 53d8c917c409470e…

MALICIOUS

PDF

42.8 KB Created: 2021-05-12 22:03:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-11
MD5: e4c183dbaaf921f7b2b6f4a3053e8f5c SHA-1: a006820fb84462fc1b26507c1208c479ef3b5022 SHA-256: 53d8c917c409470e60dd6228499a1a1bb241f4d5c2a4eb7daf3fb96c958ff33c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'free generator' or 'game hack' lures. The ML classifier also strongly indicated maliciousness. The primary attack pattern involves luring users with promises of free in-game items to a redirector, likely to host further malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/431946152/free-robux-no-verification-2021-ios-game-hack In PDF document text
    • https://www.labdagatismk1pundong.com/repository/coin-master-free-spins-hack_GM406889139.pdfIn PDF document text
    • https://www.labdagatismk1pundong.com/repository/how-to-get-coin-master-card-free_GM406889139.pdfIn PDF document text
    • https://labdagatismk1pundong.com/repository/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • https://labdagatismk1pundong.com/repository/how-to-get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • https://labdagatismk1pundong.com/repository/coin-master-free-spin-today_GM406889139.pdfIn PDF document text
    • https://labdagatismk1pundong.com/repository/minecraft-hacked-apk_GM479516143.pdfIn PDF document text
    • https://labdagatismk1pundong.com/repository/free-spin-coin-master-today_GM406889139.pdfIn PDF document text
    • https://www.labdagatismk1pundong.com/repository/coin-master-heaven-links-free-spins_GM406889139.pdfIn PDF document text
    • https://labdagatismk1pundong.com/repository/can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • https://labdagatismk1pundong.com/repository/play-roblox-free-online_GM431946152.pdfIn PDF document text
    • https://labdagatismk1pundong.com/repository/coin-master-free-spins-link-2021-ios_GM406889139.pdfIn PDF document text
    • https://labdagatismk1pundong.com/repository/claim-gg-free-robux_GM431946152.pdfIn PDF document text
    • https://labdagatismk1pundong.com/repository/login-robux_GM431946152.pdfIn PDF document text
    • https://labdagatismk1pundong.com/repository/haktutsin-2021-09-coinmaster50freespinandcoinlinkhtml-m-1_GM406889139.pdfIn PDF document text
    • https://labdagatismk1pundong.com/repository/how-do-you-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://www.labdagatismk1pundong.com/repository/minecraft-java-code-free_GM479516143.pdfIn PDF document text
    • https://www.labdagatismk1pundong.com/repository/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
    • https://labdagatismk1pundong.com/repository/coin-master-100-spin-slot_GM406889139.pdfIn PDF document text
    • https://labdagatismk1pundong.com/repository/minecraft-java-free-download_GM479516143.pdfIn PDF document text
    • https://labdagatismk1pundong.com/repository/free-robux-codes-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000498e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x498E 25080 bytes
SHA-256: 93aea707903f8cb906d41b6c192e42a2888f5a711104dd0a3d123961c8518284
font_01_sfnt_off000082ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82BA 19004 bytes
SHA-256: 57c461ba4099b7c3a729e07f809cac2bd0540fe115d61d2f21d5ca70446f19e8

Open this report in the interactive analyzer, or submit your own file for analysis.