Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6d3e036130d221f…

MALICIOUS

PDF

32.9 KB Created: 2021-07-04 13:33:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 9e29cfbc55a0b5a16807a4b0ab0c3b09 SHA-1: 8d0f3baee630361b45ade8271af709b967a75412 SHA-256: c6d3e036130d221f546a1976cbccb951187d8d2307dcb0a29e7715155bc950fb
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that are identified as malicious redirectors, specifically targeting users with lures for game hacks and free in-game currency. The primary link, http://netcdn.tw/app/479516143/play-minecraft-pocket-edition-for-free-game-hack, is associated with a 'free generator / game hack' lure. The presence of numerous similar links suggests a campaign to drive traffic to potentially malicious sites.

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.tw/app/479516143/play-minecraft-pocket-edition-for-free-game-hack In PDF document text
    • http://perpus.unpam.ac.id/repository/free-robux-easy_GM431946152.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/free-spin-coin-master-app-download_GM406889139.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/coin-master-hack-download-apk_GM406889139.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/legit-coin-master-hack-site-zyngaplayerforumscom_GM406889139.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/http-bit-ly-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/get-free-lives-on-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/minecraft-hack-ios_GM479516143.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/free-robux-hacker-us_GM431946152.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/fighting-free-card-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/chisel-and-bits-mod-pe_GM479516143.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/how-to-hack-coin-master-cheat-engine_GM406889139.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/roblox-accounts-for-sale-free_GM431946152.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/roblox-free-robux-com_GM431946152.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/coin-master-daily-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/hack-coin-master-net_GM406889139.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/how-to-get-minecraft-dungeons-for-free_GM479516143.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/coin-master-tricks-and-hacks_GM406889139.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/coin-master-100-spin-hack_GM406889139.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/coin-master-free-cards_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002df5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DF5 21420 bytes
SHA-256: 1ecbd208a80be0af747de9b2bba21e5a2b7fa1691a967ca6b9f37e940c11989d
font_01_sfnt_off00005c97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C97 18752 bytes
SHA-256: 1c750ae825fc9a886ea70e83678fe12c2f590e2b55fff129ba454ba43f005414