Malicious PDF — malware analysis report

Static analysis result for SHA-256 55acfc425592900a…

MALICIOUS

PDF

34.4 KB Created: 2021-06-17 18:29:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 0b76799252014926ac6efe60f9bdd044 SHA-1: aa4ba1b5b170f3a67310d6686721adcfd31cd371 SHA-256: 55acfc425592900a50444dfeafb477448c1f3da38abbb2d6a7ee6da321018177
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links designed to lure users into clicking on what appear to be free Robux or game hack generators. The primary link, http://netcdn.co/app/431946152/robux-codes-free-2021-game-hack, is identified as a malicious redirector. The document body and embedded URLs strongly suggest a phishing or scam attempt to direct users to potentially malicious websites.

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.co/app/431946152/robux-codes-free-2021-game-hack In PDF document text
    • http://lib.untad.ac.id//repository/how-to-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/coin-master-hack-ios-without-verification_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/coin-master-free-spin-app-reviews_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/coin-master-free-spins-cheat-deutsch_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/the-conquerors-roblox-cheats_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/haktuts-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/roblox-avatar-editor-free_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/download-coin-master-hack-tool-v1-9_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/free-robux-ads-that-are-played-on-youtube_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/free-spin-links-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/coin-master-daily_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/get-free-spins-on-coin-master-no-human-verification_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/how-to-robux_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/rewards-roblox_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/how-to-get-free-cards-on-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/como-hackear-coin-master-iphone_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/www-rubux_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/free-robux-no-email_GM431946152.pdfIn PDF document text
    • http://lib.untad.ac.id//repository/coin-master-hack-tool-without-verification_GM406889139.pdfIn PDF document text
    • http://lib.untad.ac.id/repository/show-me-how-to-get-free-robux_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_off00002efb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EFB 22276 bytes
SHA-256: 9abf87464cf35244c19211c7876082ea2f16d706e9f849689a457172818e14ac
font_01_sfnt_off000060a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60A0 19292 bytes
SHA-256: 4c5a35bd77c2257a72c4ab339729f9266b413a6ebccecee3413bf95da7ae9ba6

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