Malicious PDF — malware analysis report

Static analysis result for SHA-256 40c2ae9f1edad1b5…

MALICIOUS

PDF

34.2 KB Created: 2021-07-01 23:29:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: b7f68386eb74de1b23cdfcbbafb522ab SHA-1: c67f0e07e2a826836bd59eadc5fda90d250f0e86 SHA-256: 40c2ae9f1edad1b5998a82d111b0aded901b4295e738e4d10c39e4802864bdd9
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to redirectors that are flagged as malicious, specifically promoting 'free generator' and 'game hack' lures. The document body and extracted URLs reinforce this theme, aiming to trick users into clicking through to potentially harmful sites. While no scripts were extracted, the presence of malicious redirectors and the lure content strongly suggest a phishing or malware distribution 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/google-roblox-catalog-free-game-hack In PDF document text
    • http://www.businessloanspecialist.com/uploaded_files/userfiles/files/mano-county-roblox-hack_GM431946152.pdfIn PDF document text
    • http://www.businessloanspecialist.com/uploaded_files/userfiles/files/coin-master-hack-1021_GM406889139.pdfIn PDF document text
    • http://www.businessloanspecialist.com/uploaded_files/userfiles/files/rbxboost-earn-free-roblox-robux_GM431946152.pdfIn PDF document text
    • http://www.businessloanspecialist.com/uploaded_files/userfiles/files/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • http://www.businessloanspecialist.com/uploaded_files/userfiles/files/roblox-get-free-plus-on-meep-city-working-2021_GM431946152.pdfIn PDF document text
    • http://www.businessloanspecialist.com/uploaded_files/userfiles/files/robuxy-com-free-robux_GM431946152.pdfIn PDF document text
    • http://www.businessloanspecialist.com/uploaded_files/userfiles/files/free-tiktok-followers-generator_GM835599320.pdfIn PDF document text
    • http://www.businessloanspecialist.com/uploaded_files/userfiles/files/roblox-svg-free_GM431946152.pdfIn PDF document text
    • http://www.businessloanspecialist.com/uploaded_files/userfiles/files/bandicam-free-robux_GM431946152.pdfIn PDF document text
    • http://www.businessloanspecialist.com/uploaded_files/userfiles/files/how-to-hack-any-roblox-account_GM431946152.pdfIn PDF document text
    • http://www.businessloanspecialist.com/uploaded_files/userfiles/files/google-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://www.businessloanspecialist.com/uploaded_files/userfiles/files/coin-master-free-spins-generator-no-human-verification_GM406889139.pdfIn PDF document text
    • http://www.businessloanspecialist.com/uploaded_files/userfiles/files/why-tiktok-free-download_GM835599320.pdfIn PDF document text
    • http://www.businessloanspecialist.com/uploaded_files/userfiles/files/how-to-get-free-premium-roblox_GM431946152.pdfIn PDF document text
    • http://www.businessloanspecialist.com/uploaded_files/userfiles/files/how-to-get-free-robux-2021-no-verification_GM431946152.pdfIn PDF document text
    • http://www.businessloanspecialist.com/uploaded_files/userfiles/files/cheat-hacks-in-roblox-bee-swarm-simulator_GM431946152.pdfIn PDF document text
    • http://www.businessloanspecialist.com/uploaded_files/userfiles/files/free-roblox-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • http://www.businessloanspecialist.com/uploaded_files/userfiles/files/roblox-fun-com-free-robux_GM431946152.pdfIn PDF document text
    • http://www.businessloanspecialist.com/uploaded_files/userfiles/files/seniac-roblox-free-robux_GM431946152.pdfIn PDF document text
    • http://www.businessloanspecialist.com/uploaded_files/userfiles/files/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 5

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_off00003038.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3038 22068 bytes
SHA-256: 31521db3d6d92ef58b297afaca9ac4dd8dc025699e86dcca8c7deb92cb468cd4
font_01_sfnt_off0000613a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x613A 18752 bytes
SHA-256: a266f823298829a2afdcf98dae48ad120fb2f92cb709087da53dbc2c183ea5f6

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