Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a62f30f3c6a4ad8…

MALICIOUS

PDF

47.2 KB Created: 2021-06-04 03:21:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22
MD5: a58d7e6ee6f878ad78b88c3bed4b73d4 SHA-1: b8c16294ebe989bbffba97159f21289caf2b09c3 SHA-256: 0a62f30f3c6a4ad8ced17384dfe68628bd5e0fcdf5e4a28b42ea646b0d67b9c4
200 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution T1534 Internal Spearphishing

This PDF document contains multiple links to malicious redirectors, masquerading as game hacks and generators. The primary link impersonates Microsoft and directs users to a credential phishing page. The document's structure and embedded links suggest an attempt to trick users into visiting malicious sites, likely for credential harvesting or to download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

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.
  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://netcdn.online/app/431946152/what-do-points-do-in-roblox-game-hack.
  • 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 https://netcdn.online/app/431946152/what-do-points-do-in-roblox-game-hack In PDF document text
    • http://library.thamrin.ac.id/repository/coin-master-free-spins-and-coins-link-haktuts_GM406889139.pdfIn PDF document text
    • http://library.thamrin.ac.id/repository/coin-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://library.thamrin.ac.id/repository/roblox-mobile-hack_GM431946152.pdfIn PDF document text
    • http://library.thamrin.ac.id/repository/how-to-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.thamrin.ac.id/repository/coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://library.thamrin.ac.id/repository/free-robux-redeem-codes_GM431946152.pdfIn PDF document text
    • http://library.thamrin.ac.id/repository/httpswwwurcouponsdealcom202103coinmasterfreespinandcoinlinkshtml_GM406889139.pdfIn PDF document text
    • http://library.thamrin.ac.id/repository/free-minecraft-mods-for-xbox-one_GM479516143.pdfIn PDF document text
    • http://library.thamrin.ac.id/repository/coin-master-link_GM406889139.pdfIn PDF document text
    • http://library.thamrin.ac.id/repository/roblox-games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://library.thamrin.ac.id/repository/coin-master-hack-spins_GM406889139.pdfIn PDF document text
    • http://library.thamrin.ac.id/repository/freecoins_GM406889139.pdfIn PDF document text
    • http://library.thamrin.ac.id/repository/watch-videos-for-robux_GM431946152.pdfIn PDF document text
    • http://library.thamrin.ac.id/repository/how-to-get-roblox-premium-for-free_GM431946152.pdfIn PDF document text
    • http://library.thamrin.ac.id/repository/free-robux-websites-2021_GM431946152.pdfIn PDF document text
    • http://library.thamrin.ac.id/repository/minecraft-wurst_GM479516143.pdfIn PDF document text
    • http://library.thamrin.ac.id/repository/robux-come_GM431946152.pdfIn PDF document text
    • http://library.thamrin.ac.id/repository/coin-master-free-cards-link_GM406889139.pdfIn PDF document text
    • http://library.thamrin.ac.id/repository/free-spins-for-coin-master-on-1-19-19_GM406889139.pdfIn PDF document text
    • http://library.thamrin.ac.id/repository/coin-master-free-coins-and-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005155.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5155 24768 bytes
SHA-256: a43e4b034242f826f3d3eb4e139cc0d189805f167dbac42c27634934742dd316
font_01_sfnt_off000089f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89F8 2820 bytes
SHA-256: 34dd21cbcbbf8680f9624d5ddfa25e49232e6768200f74ddacb5347fd7a5f6dc
font_02_sfnt_off00009399.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9399 18920 bytes
SHA-256: b7b86ed324264c44522b23f0c2231fa68c55c0eee51ac73e12797fae7dfada6e

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