Malicious PDF — malware analysis report

Static analysis result for SHA-256 95c539b3c2930602…

MALICIOUS

PDF

34.7 KB Created: 2021-06-28 10:55:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 9017776d86f0304d61d6e782c7d25c17 SHA-1: 4a6757e7521c1c303d51dfa7d93025160d977f63 SHA-256: 95c539b3c293060293b9f49b08826d7865f7a5f4bcaabc98a6f1a14de47f94f5
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for a game hack redirect lure, pointing to a malicious URL. The document body and embedded URLs reinforce this, indicating a social engineering attempt to trick users into visiting a site offering 'free Robux' or game hacks. While no scripts were extracted, the PDF structure and embedded links strongly 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/easiest-way-to-get-free-robux-on-roblox-game-hack In PDF document text
    • http://opac.salatiga.go.id/slims7/repository/legitimate-coin-master-free-spins-apk_GM406889139.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/free-coin-master-spins-blog_GM406889139.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/roblox-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/pokemon-go-free-outfits_GM1094591345.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/roblox-exploit-cheat-engine_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/robux-generator-that-works_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/free-roblox-catalog-items-2021_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/today-free-spin-coin-master_GM406889139.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/how-to-fix-roblox-hacks-wikihow_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/roblox-game-pass-free_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/good-hacks-free-roblox_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/robux-free-gift-card_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/how-to-get-free-robux-pc-2021_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/hacks-para-roblox-descargar-2021_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/get-pokemon-go-free-coins_GM1094591345.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/free-roblox-clothes_GM431946152.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/coin-master-free-coins-link_GM406889139.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/coin-master-free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7//repository/coin-master-free-spins-link-no-verification-2021_GM406889139.pdfIn PDF document text
    • http://opac.salatiga.go.id/slims7/repository/roblox-exploits-2021-free_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
font_00_sfnt_off000030d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30D5 21964 bytes
SHA-256: 0ee2cd52fb81c3fb11020422de37fa0c3fc47a6096aec9d72171a58aa03f87da
font_01_sfnt_off00006174.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6174 19392 bytes
SHA-256: 7c3671b5942be08635232e064ddbc31544cb186f149dccbc32347644e703a127

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