Malicious PDF — malware analysis report

Static analysis result for SHA-256 0234cd6a5d3c2e45…

MALICIOUS

PDF

36.7 KB Created: 2021-07-07 20:10:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 0cb3035667436a322cc4233886d7e51d SHA-1: 095c310434c3c79ef0522f9cc27ecc81d42bba07 SHA-256: 0234cd6a5d3c2e4546ac7610e08434713503125f315807fe0d09d02a38b6e19f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to a malicious redirector, disguised as generators for free game currency and hacks. The primary malicious URL identified is http://netcdn.tw/app/406889139/coin-master-free-spins-and-coins-link-blogspot-game-hack. The document body and embedded URLs strongly suggest a social engineering lure to drive traffic to potentially malicious sites. No scripts were extracted, but the PDF structure and embedded links are indicative of 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.tw/app/406889139/coin-master-free-spins-and-coins-link-blogspot-game-hack In PDF document text
    • http://perpus.stikes-bhm.ac.id/perpusbhm/repository/how-to-get-a-cape-in-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://perpus.stikes-bhm.ac.id/perpusbhm//repository/can-you-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.stikes-bhm.ac.id/perpusbhm/repository/get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://perpus.stikes-bhm.ac.id/perpusbhm/repository/how-to-play-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • http://perpus.stikes-bhm.ac.id/perpusbhm/repository/coin-master-free-spin-and-trading_GM406889139.pdfIn PDF document text
    • http://perpus.stikes-bhm.ac.id/perpusbhm/repository/roblox-adopt-me-hack_GM431946152.pdfIn PDF document text
    • http://perpus.stikes-bhm.ac.id/perpusbhm/repository/free-robux-download_GM431946152.pdfIn PDF document text
    • http://perpus.stikes-bhm.ac.id/perpusbhm//repository/roblox-sexually_GM431946152.pdfIn PDF document text
    • http://perpus.stikes-bhm.ac.id/perpusbhm//repository/robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • http://perpus.stikes-bhm.ac.id/perpusbhm/repository/coin-master-hack-spins-apk_GM406889139.pdfIn PDF document text
    • http://perpus.stikes-bhm.ac.id/perpusbhm/repository/how-to-get-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.stikes-bhm.ac.id/perpusbhm/repository/pubg-uc-recharge_GM1330123889.pdfIn PDF document text
    • http://perpus.stikes-bhm.ac.id/perpusbhm/repository/free-roblox-passwords_GM431946152.pdfIn PDF document text
    • http://perpus.stikes-bhm.ac.id/perpusbhm//repository/free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
    • http://perpus.stikes-bhm.ac.id/perpusbhm/repository/minecraft-free-online_GM479516143.pdfIn PDF document text
    • http://perpus.stikes-bhm.ac.id/perpusbhm//repository/coin-master-free-spins-cheats_GM406889139.pdfIn PDF document text
    • http://perpus.stikes-bhm.ac.id/perpusbhm/repository/how-to-get-free-minecraft-alts_GM479516143.pdfIn PDF document text
    • http://perpus.stikes-bhm.ac.id/perpusbhm/repository/roblox-apk-hack_GM431946152.pdfIn PDF document text
    • http://perpus.stikes-bhm.ac.id/perpusbhm//repository/demon-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.stikes-bhm.ac.id/perpusbhm//repository/hackear-coin-master-2021_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_off000037d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x37D0 23108 bytes
SHA-256: 7e612551fcb5a5b87c5f48802823102e46166564dfe08b37d8704152fe052a20
font_01_sfnt_off00006b76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B76 18808 bytes
SHA-256: c1f494af37efa3c19b76a788520f3f9c15a1a81de3f38337c7b875dc57d79974

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