Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f64760a3a3ec382…

MALICIOUS

PDF

34.4 KB Created: 2021-06-19 13:29:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 2a5fa05d12b17135f99a482be87ebb22 SHA-1: 809ed5858cf69e0b7c24616350a9408896c2a513 SHA-256: 7f64760a3a3ec382819b91034cf18b047715e018d81414c6547305130dd79221
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document contains numerous links designed to lure users into clicking on what appear to be game hacks or generators. The primary link, http://netcdn.co/app/431946152/how-to-get-free-robux-google-game-hack, is identified as a malicious redirector. The document body and heuristics indicate a scam workflow aimed at tricking users into visiting potentially harmful sites.

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/how-to-get-free-robux-google-game-hack In PDF document text
    • http://library.itekes-bali.ac.id/repository/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/coin-master-claim-free-spins_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/coin-master-free-spins-link-today-instagram_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-aand-true-ways-to-get-robux_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-robux-websites-2021_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-arsenal-hacks_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/how-to-change-roblox-username-for-free-2021_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-robux-generator-no-verification_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/www-roblox-com-robux-free_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/coin-master-free-spins-save_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-tiktok-likes-no-survey_GM835599320.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/blogspot-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-minecraft-mods_GM479516143.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-roblox-gift-card-codes-2021_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/roblox-hack-me_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/pokemon-go-free_GM1094591345.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-robux-gift-card-codes-2021-unused_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/real-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/hack-to-get-free-spins-on-coin-master_GM406889139.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_002_off00002ecb.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2ECB 22724 bytes
SHA-256: b5d6e884b03719bc579b83e844372aaca20669e3eeb9a0476c424c9499cb373c
font_01_sfnt_off00006161.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6161 19056 bytes
SHA-256: eae788003faa03d6963e41757536fa186fd0d9236f24dfeb3529e9d02da1e8cf

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