Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d0ca864647ee35d…

MALICIOUS

PDF

46.3 KB Created: 2021-05-13 13:30:23 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: f919f6132402e696544b21c04d4c6d49 SHA-1: ab04fcf91608905f9c162571e2a379270e825636 SHA-256: 6d0ca864647ee35dd777550a9641718f52a1f854c7add613d974df5b9992acc7
160 Risk Score

Malware Insights

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

The PDF document contains multiple links to known malicious redirectors and infrastructure, disguised as "game hacks" or "generators." The primary lure appears to be related to "Robux" for Roblox, a common theme in phishing and scam campaigns. The document body, though partially corrupted, contains URLs that are also present in the extracted URL list, reinforcing the malicious redirection pattern. No scripts were extracted, but the presence of malicious links and the "game hack" lure strongly suggest a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

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/games-in-roblox-that-give-you-robux-game-hack In PDF document text
    • http://stroygrad-spb.com/images/free-robux-generator-no-human-verification-or-surveys_GM431946152.pdfIn PDF document text
    • http://stroygrad-spb.com/images/minecraft-hack-client-download_GM479516143.pdfIn PDF document text
    • http://stroygrad-spb.com/images/games-on-roblox-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://stroygrad-spb.com/images/coin-master-online-hack-generator_GM406889139.pdfIn PDF document text
    • http://stroygrad-spb.com/images/apps-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://stroygrad-spb.com/images/free-spin-coin-master-link-download_GM406889139.pdfIn PDF document text
    • http://stroygrad-spb.com/images/does-roblox-premium-expire_GM431946152.pdfIn PDF document text
    • http://stroygrad-spb.com/images/coin-master-free-spins-only_GM406889139.pdfIn PDF document text
    • http://stroygrad-spb.com/images/coin-master-links-free-spins_GM406889139.pdfIn PDF document text
    • http://stroygrad-spb.com/images/free-robux-no-human-verification-and-no-survey_GM431946152.pdfIn PDF document text
    • http://stroygrad-spb.com/images/free-spins-and-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://stroygrad-spb.com/images/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://stroygrad-spb.com/images/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://stroygrad-spb.com/images/free-robux-generator-no-survey_GM431946152.pdfIn PDF document text
    • http://stroygrad-spb.com/images/master-free-spin-and-coin-links-html-m-1_GM406889139.pdfIn PDF document text
    • http://stroygrad-spb.com/images/free-robux-generator-no-survey-no-download-no-human-verification_GM431946152.pdfIn PDF document text
    • http://stroygrad-spb.com/images/free-spins-coin-master-links-blogspot_GM406889139.pdfIn PDF document text
    • http://stroygrad-spb.com/images/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://stroygrad-spb.com/images/roblox-how-to-get-free-clothes_GM431946152.pdfIn PDF document text
    • http://stroygrad-spb.com/images/get-free-robux-now_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
stream_003_off0000499f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x499F 30244 bytes
SHA-256: 977f72fd3b42df8d9e0c6ccbb542d74db81dcb8dffa6a220b414062e96117ab3
font_01_sfnt_off000090a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90A4 19080 bytes
SHA-256: c6e3d3e28a7d5941816be58ee252aec25ccb1734d5fd424cc8cfd72334d51d0a

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