Malicious PDF — malware analysis report

Static analysis result for SHA-256 8045d44e8d8378d4…

MALICIOUS

PDF

34.7 KB Created: 2021-07-03 17:00:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-12
MD5: c0eae1a9b0e2101fee2f2346ed1ad2fc SHA-1: caceec6e4334463511292a9e53566572516176a2 SHA-256: 8045d44e8d8378d4483bf9612c9ba5eb806dca9985add8919ea7697676817196
200 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to websites that offer game hacks and free currency, a common lure for phishing or malware distribution. One critical heuristic identified a link to a known malicious redirector infrastructure, and another pointed to a raw IP address, indicating malicious intent. The document body explicitly mentions 'Free Roblox Accounts With Robux 2021' and 'game hack', reinforcing the lure. No scripts were extracted, but the embedded URLs are the primary indicators of malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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.
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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.tw/app/431946152/free-roblox-accounts-with-robux-2021-game-hack In PDF document text
    • http://103.40.122.33/akasia/repository/minecraft-free-download-iphone_GM479516143.pdfPDF link annotation
    • http://103.40.122.33/akasia/repository/rorewards-com-earn-free-robux-for-roblox_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/roblox-free-promo-codes-vrp-madness_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/hack-roblox-gs-co_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/free-robux-that-actually-works-2021_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/jailbreak-free-robux_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/10-ways-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/pokemon-go-free-lures_GM1094591345.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/flee-the-facility-roblox-hack-exploit-gui_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/como-tener-wall-hacks-en-roblox_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/free-robux-no-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/how-to-hack-poke-in-roblox_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/roblox-dll-hack-2021_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/how-to-ave-a-code-for-robux-free_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/free-robux-gift-card-codes-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/pastebincom-get-free-robux_GM431946152.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/is-minecraft-java-edition-free_GM479516143.pdfIn PDF document text
    • http://103.40.122.33/akasia/repository/tp-hack-roblox_GM431946152.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_off00002ebe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EBE 22424 bytes
SHA-256: faf41496f47075da91d2ed7bfeb268faf7f42e08ab7cc79a09acd7b6ae948f11
font_01_sfnt_off0000608c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x608C 19780 bytes
SHA-256: 25192f6a53e08aa9ffc26a88a4bc642b185baba041384cccd6a0910bb22c1d67

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