Malicious PDF — malware analysis report

Static analysis result for SHA-256 3bc54a694636efa1…

MALICIOUS

PDF

42.4 KB Created: 2021-05-12 20:05:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: e0e87f41e277288b0889e9cfcb7ce8a0 SHA-1: a7cee174189ac99a49e427e8938be5614703aa54 SHA-256: 3bc54a694636efa1604edfa6298b497d4973f0f2757822ec3ae11160da1bb191
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links designed to lure users to external sites, including a primary redirector associated with game hacks and scams. The document body and embedded links promote free game items and generators, indicating a phishing or scam attempt. While no scripts were directly extracted, the PDF structure and embedded links suggest it acts as a gateway to malicious content, likely involving JavaScript execution for redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 5

  • 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.
  • 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/406889139/coin-master-15-free-spin-link-of-last-5-days-game-hack In PDF document text
    • http://pianoservice.com.ua/images/how-do-you-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://pianoservice.com.ua/images/free-robux-scam_GM431946152.pdfIn PDF document text
    • http://pianoservice.com.ua/images/free-robux-generator-no-survey_GM431946152.pdfIn PDF document text
    • http://pianoservice.com.ua/images/how-many-levels-are-there-in-coin-master_GM406889139.pdfIn PDF document text
    • http://pianoservice.com.ua/images/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://pianoservice.com.ua/images/coin-master-free-spins-hack_GM406889139.pdfIn PDF document text
    • http://pianoservice.com.ua/images/op-rewards-free-robux_GM431946152.pdfIn PDF document text
    • http://pianoservice.com.ua/images/free-spin-sites-for-coin-master_GM406889139.pdfIn PDF document text
    • http://pianoservice.com.ua/images/free-premium-roblox_GM431946152.pdfIn PDF document text
    • http://pianoservice.com.ua/images/free-spins-and-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://pianoservice.com.ua/images/coin-master-free-spin-and-coin-link-haktuts-hacking-news_GM406889139.pdfIn PDF document text
    • http://pianoservice.com.ua/images/coin-master-hack-progamers_GM406889139.pdfIn PDF document text
    • http://pianoservice.com.ua/images/best-free-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://pianoservice.com.ua/images/spin-coin-master_GM406889139.pdfIn PDF document text
    • http://pianoservice.com.ua/images/how-to-get-free-roebucks-on-roblox_GM431946152.pdfIn PDF document text
    • http://pianoservice.com.ua/images/roblox-hack-com_GM431946152.pdfIn PDF document text
    • http://pianoservice.com.ua/images/coin-master-hacks-for-pet-food_GM406889139.pdfIn PDF document text
    • http://pianoservice.com.ua/images/hack-minecraft_GM479516143.pdfIn PDF document text
    • http://pianoservice.com.ua/images/you-promised-my-son-free-robux_GM431946152.pdfIn PDF document text
    • http://pianoservice.com.ua/images/free-printable-minecraft-coloring-pages_GM479516143.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_off00004901.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4901 24892 bytes
SHA-256: 470ff8b640b98e006599fdc2c96cb24c34463f532b079f4fe83cea2067ef4389
font_01_sfnt_off00008266.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8266 18644 bytes
SHA-256: 4144dbe1534d0325d37e4c6129895ddb34a2bc26123e242025982d4ceef1bd2b

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