Malicious PDF — malware analysis report

Static analysis result for SHA-256 614bcb412759f4d3…

MALICIOUS

PDF

42.1 KB Created: 2021-05-17 03:46:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-23
MD5: da3293f63193ed1f51f4676911efa881 SHA-1: 6fcf5c7422f5cba1456018d5601fe8caa7b9f74d SHA-256: 614bcb412759f4d3c7c243e7c4008aaef97f85aea4497766bd1a82dd6e8d3702
260 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document is designed as a lure, presenting links to "free generators" and "game hacks" to entice users. The document contains numerous links to external PDF files and a primary redirector URL, indicating a social engineering tactic to drive traffic to potentially malicious sites. The 'SE_CLICKFIX' heuristic suggests the document may also instruct users to execute commands, further increasing the risk.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 6

  • 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.
  • 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.
  • ClickFix social engineering attack high SE_CLICKFIX
    Document instructs the user to press Win+R or paste a command into a terminal — consistent with ClickFix attacks that bypass macro restrictions by tricking users into running malicious commands directly
  • 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/479516143/free-minecraft-alt-generator-game-hack In PDF document text
    • http://gomelavto.by/images/how-to-get-free-robux-without-verification_GM431946152.pdfIn PDF document text
    • http://gomelavto.by/images/hacked-roblox-game_GM431946152.pdfIn PDF document text
    • http://gomelavto.by/images/free-spins-and-coins-coin-master-links_GM406889139.pdfIn PDF document text
    • http://gomelavto.by/images/how-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://gomelavto.by/images/how-to-get-free-robux-on-phone_GM431946152.pdfIn PDF document text
    • http://gomelavto.by/images/coin-master-15-free-spin-link-of-last-5-days_GM406889139.pdfIn PDF document text
    • http://gomelavto.by/images/daily-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://gomelavto.by/images/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • http://gomelavto.by/images/minecraft-free-download-windows_GM479516143.pdfIn PDF document text
    • http://gomelavto.by/images/coin-master-hack-co_GM406889139.pdfIn PDF document text
    • http://gomelavto.by/images/cm-spin-link_GM406889139.pdfIn PDF document text
    • http://gomelavto.by/images/coin-master-spin-link-free-download_GM406889139.pdfIn PDF document text
    • http://gomelavto.by/images/roblox-free-play-no-download_GM431946152.pdfIn PDF document text
    • http://gomelavto.by/images/coin-master-hack-tool-for-pc_GM406889139.pdfIn PDF document text
    • http://gomelavto.by/images/how-to-get-roebucks-in-roblox_GM431946152.pdfIn PDF document text
    • http://gomelavto.by/images/free-daily-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://gomelavto.by/images/coin-master-hack-without-human-verification-india_GM406889139.pdfIn PDF document text
    • http://gomelavto.by/images/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://gomelavto.by/images/how-to-get-free-roblox-premium_GM431946152.pdfIn PDF document text
    • http://gomelavto.by/images/coin-master-daily-free-spins-link-blogspot_GM406889139.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
font_00_sfnt_off00004a53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A53 25188 bytes
SHA-256: 4dd17ae27af901d5328e1fa80237d8361a0be84d92340ab7c4818f38e0784709
font_01_sfnt_off000083c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83C1 17784 bytes
SHA-256: 66ae3cfb6d310f144f42187aaa203441353bb0cc88c1a3915b2f7a14fa3c41b8

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