Malicious PDF — malware analysis report

Static analysis result for SHA-256 a808d306fb667f19…

MALICIOUS

PDF

44.3 KB Created: 2021-05-14 19:37:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 4f80514bafb6abca67efd9d4ba3c8b8a SHA-1: 35cea8a5e8a3778621d9f321e23545994e8d61b4 SHA-256: a808d306fb667f1954d2aeb3e7bb4b9d5457ad0a0c0b070f52b2cda26056d2e0
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links designed to lure users into clicking on what appear to be game-related hacks or generators. These links redirect to malicious infrastructure, specifically a known malicious redirector. The document body and embedded links suggest a phishing attempt disguised as a free generator or hack, likely to lead users to a scam or malware download. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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/431946152/free-robux-sites-that-work-game-hack In PDF document text
    • http://standart-lab.ru/images/hack-coin-master-no-verification_GM406889139.pdfIn PDF document text
    • http://standart-lab.ru/images/open-coin-master_GM406889139.pdfIn PDF document text
    • http://standart-lab.ru/images/free-redeem-code-for-coin-master_GM406889139.pdfIn PDF document text
    • http://standart-lab.ru/images/roblox-free-clothes-codes_GM431946152.pdfIn PDF document text
    • http://standart-lab.ru/images/coin-master-daily-free-spins-today_GM406889139.pdfIn PDF document text
    • http://standart-lab.ru/images/show-me-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://standart-lab.ru/images/coin-master-free-spins-hack-but-no-surveys_GM406889139.pdfIn PDF document text
    • http://standart-lab.ru/images/coin-master-games-hack_GM406889139.pdfIn PDF document text
    • http://standart-lab.ru/images/how-to-win-free-robux_GM431946152.pdfIn PDF document text
    • http://standart-lab.ru/images/free-robux-app_GM431946152.pdfIn PDF document text
    • http://standart-lab.ru/images/roblox-april-fools-hack_GM431946152.pdfIn PDF document text
    • http://standart-lab.ru/images/how-to-make-free-robux_GM431946152.pdfIn PDF document text
    • http://standart-lab.ru/images/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://standart-lab.ru/images/how-to-get-free-robux-on-phone-2021_GM431946152.pdfIn PDF document text
    • http://standart-lab.ru/images/hack-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://standart-lab.ru/images/legit-coin-master-hack-site-zyngaplayerforumscom_GM406889139.pdfIn PDF document text
    • http://standart-lab.ru/images/coin-master-hack-lost-world-2021_GM406889139.pdfIn PDF document text
    • http://standart-lab.ru/images/minecraft-launcher-download-free_GM479516143.pdfIn PDF document text
    • http://standart-lab.ru/images/free-robux-co_GM431946152.pdfIn PDF document text
    • http://standart-lab.ru/images/coin-master-free-coins-spins_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_off00004709.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4709 28440 bytes
SHA-256: eb7b273d82d14f4dc48b2a722cb06c1273df925fd543bb1f88978373af0b64e5
font_01_sfnt_off000088c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88C0 19000 bytes
SHA-256: c0bc6bb0706fab35ff455fc4816471a1ab7f6ae4486f691ef98043b3efa3f18d

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