Malicious PDF — malware analysis report

Static analysis result for SHA-256 a3a54990c3367568…

MALICIOUS

PDF

34.6 KB Created: 2021-06-28 12:33:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 458eb4086bf32491927af19739eb74a6 SHA-1: 0934f1959d56cd0a6e50ed43b451559a39a1eeb9 SHA-256: a3a54990c33675685b0f3b425b5d4ec42a49dde335374ab1e3e55349ae60bf9b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links, including one identified as a malicious redirector. The document body and heuristics indicate a lure for game hacks or generators, aiming to redirect users to potentially harmful websites. No scripts were extracted, but the presence of malicious links and the lure suggest a phishing or scam attempt.

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-hacks-tay-take-off-game-hack In PDF document text
    • https://www.esmartdigitalcard.com/uploaded_files/userfiles/files/huskybuscom-free-robux_GM431946152.pdfIn PDF document text
    • https://www.esmartdigitalcard.com/uploaded_files/userfiles/files/hack-de-roblox-robux-2021_GM431946152.pdfIn PDF document text
    • https://www.esmartdigitalcard.com/uploaded_files/userfiles/files/try-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://www.esmartdigitalcard.com/uploaded_files/userfiles/files/minecraft-free-no-download_GM479516143.pdfIn PDF document text
    • https://www.esmartdigitalcard.com/uploaded_files/userfiles/files/april-fools-roblox-hack_GM431946152.pdfIn PDF document text
    • https://www.esmartdigitalcard.com/uploaded_files/userfiles/files/is-minecraft-java-free_GM479516143.pdfIn PDF document text
    • https://www.esmartdigitalcard.com/uploaded_files/userfiles/files/free-robux-com-real_GM431946152.pdfIn PDF document text
    • https://www.esmartdigitalcard.com/uploaded_files/userfiles/files/get-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.esmartdigitalcard.com/uploaded_files/userfiles/files/10-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.esmartdigitalcard.com/uploaded_files/userfiles/files/free-robux-no-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://www.esmartdigitalcard.com/uploaded_files/userfiles/files/coin-master-spin-pattern_GM406889139.pdfIn PDF document text
    • https://www.esmartdigitalcard.com/uploaded_files/userfiles/files/free-roblox-website_GM431946152.pdfIn PDF document text
    • https://www.esmartdigitalcard.com/uploaded_files/userfiles/files/free-robux-glitch-2021_GM431946152.pdfIn PDF document text
    • https://www.esmartdigitalcard.com/uploaded_files/userfiles/files/roblox-how-to-get-non-free-models_GM431946152.pdfIn PDF document text
    • https://www.esmartdigitalcard.com/uploaded_files/userfiles/files/daily-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.esmartdigitalcard.com/uploaded_files/userfiles/files/free-robux-generator-2021-no-survey_GM431946152.pdfIn PDF document text
    • https://www.esmartdigitalcard.com/uploaded_files/userfiles/files/coin-master-links-2021_GM406889139.pdfIn PDF document text
    • https://www.esmartdigitalcard.com/uploaded_files/userfiles/files/coin-master-hack-2021-without-human-verification_GM406889139.pdfIn PDF document text
    • https://www.esmartdigitalcard.com/uploaded_files/userfiles/files/roblox-murder-mystery-2-hack-script-pastebin_GM431946152.pdfIn PDF document text
    • https://www.esmartdigitalcard.com/uploaded_files/userfiles/files/free-robux-no-human-verification-or-survey-or-download_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 6

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_off000030b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30B7 22576 bytes
SHA-256: c67fc8ba35575d12b10815682e8cd76d343f1b66e2d38eea5258d67379f00225
font_01_sfnt_off0000627d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x627D 18900 bytes
SHA-256: 386e9f952f10f5ef33fc2620b3862fdaf0a3f92001bdb79718be3ae8e515d3c9

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