Malicious PDF — malware analysis report

Static analysis result for SHA-256 56bf4731ac0fe7dc…

MALICIOUS

PDF

35.5 KB Created: 2021-06-30 09:47:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 562e84fbac3fa7bf1436a0c16b9a1132 SHA-1: 230817d741e9af33bf25b8ba0837344c37436898 SHA-256: 56bf4731ac0fe7dc0c28c4f1ca7140077c8db64b927e6f2091510749498a77e3
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document is designed as a lure, employing tactics to trick users into clicking links related to game hacks and cheats. It contains numerous links to external resources, including a primary malicious redirector, and a large number of SEO-optimized PDF links, suggesting a link farm designed to drive traffic. The document body and heuristics indicate a focus on 'game hacks' and 'free currency' for popular games like Roblox and Coin Master, aiming to exploit user interest in these topics. No scripts were extracted, but the PDF structure and embedded links are indicative of a phishing or scam attempt.

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 http://netcdn.co/app/431946152/roblox-adopt-me-money-hack-2021-script-game-hack In PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-hack-coin-master-android_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/legitimate-coin-master-free-spins-apk_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/spin-free-coin-master_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/hack-roblox-sered_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/best-admin-hack-for-roblox_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/hack-robux-free-iphone_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coin-master-free-spin-whatsapp-group-link_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coin-master-free-spin-ml_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-account-hack-download-free_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-free-skin-2021_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-roblox-costumes_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/there-are-secret-ways-of-getting-free-robux_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-how-to-hack-robux-with-cheat-engine-64_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/hack-roblox-ultimate-driving-dinero-infinito_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/2021-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/robux-premium_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/where-to-put-code-for-free-roblox_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-purchase-robux-for-free_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/roblox-free-bandana_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_off00003072.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3072 22420 bytes
SHA-256: 8acfcf4f07acf24614ebf92d1965560d6cd7e895ec0fa60bb59db8dce33723dd
font_01_sfnt_off00006289.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6289 20008 bytes
SHA-256: d339a9991df6b3d2b604bfabafd8270983b7f316ddb47a82b4fb743909319a4e

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