Malicious PDF — malware analysis report

Static analysis result for SHA-256 573ae103ec3db90c…

MALICIOUS

PDF

34.5 KB Created: 2021-06-19 05:12:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: a4b2ba096cba22a1e798366d2f8da5e9 SHA-1: 2d9ade6af3562d6d880ca32c98690b01d891c413 SHA-256: 573ae103ec3db90c6a47396dbb0e7bea1befe7c9fda02b28d9c1685f352db32b
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 URL that is also flagged as a malicious redirector. The document body and embedded URLs reinforce this lure, aiming to trick users into visiting the malicious site. No scripts were extracted, but the primary attack vector appears to be a phishing lure leading to a malicious URL.

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/free-robux-giver-no-verification-game-hack In PDF document text
    • https://library.stikeswnpalu.ac.id/repository/free-robux-rbxrewards_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/deadzone-hacks-roblox_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/roblox-fr-extreme-hack_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/hack-para-anime-cross-roblox_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/free-robux-not-fake_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/free-gold-cards-in-coin-master_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/roblox-robux-hack-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/robux-hack-download-2021_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/how-to-hack-someones-roblox-account-2021_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/coin-master-free-spins-link-cheat_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/free-robux-accounts_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/roblox-rewards-site_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/haktuts-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/free-coin-master-spins-for-today_GM406889139.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/free-minecraft-alts_GM479516143.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/roblox-bux-free_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/free-robux-net_GM431946152.pdfIn PDF document text
    • https://library.stikeswnpalu.ac.id/repository/coin-master-hack-link_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
font_00_sfnt_off00003139.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3139 21916 bytes
SHA-256: 57f64aea87ed67410fc52370eefb2470822597daf07b78772d3175abe4cfc7bc
font_01_sfnt_off0000615d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x615D 19188 bytes
SHA-256: 98a69145a3ec647f7377d94d792e831c2f7b0951ad5b419dbc79778ed4eaa3f5

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