Malicious PDF — malware analysis report

Static analysis result for SHA-256 44b59bf7ac388705…

MALICIOUS

PDF

47.4 KB Created: 2021-05-17 05:44:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 77196218940a0898dea912e7edac2c79 SHA-1: e02a26a7d94a81fb202ea36d1b6e0af889b5b31e SHA-256: 44b59bf7ac388705443253a0e2422a420eb2926bc5b801c526b8369bddd67fe1
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document employs a common lure of 'free game hacks' to entice users into clicking a link. The primary link directs to a known malicious redirector, which likely serves as a gateway to further malicious content or exploits. The presence of embedded URLs and the ML classifier's strong flagging indicate a high likelihood of malicious intent, potentially leading to client-side exploitation or the download of additional malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9013

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 https://netcdn.xyz/app/406889139/coin-master-cards-for-free-game-hack In PDF document text
    • http://elearningma.darmuj.sch.id/__statics/gudangsoal/files/www-roblox-com-robux-free_GM431946152.pdfIn PDF document text
    • http://elearningma.darmuj.sch.id/__statics/gudangsoal/files/minecraft-pvp-hacks_GM479516143.pdfIn PDF document text
    • http://elearningma.darmuj.sch.id/__statics/gudangsoal/files/coin-master-spin-link-hack_GM406889139.pdfIn PDF document text
    • http://elearningma.darmuj.sch.id/__statics/gudangsoal/files/how-to-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://elearningma.darmuj.sch.id/__statics/gudangsoal/files/25-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://elearningma.darmuj.sch.id/__statics/gudangsoal/files/coin-master-mod-apk-unlimited-spin-download-free-full-version_GM406889139.pdfIn PDF document text
    • http://elearningma.darmuj.sch.id/__statics/gudangsoal/files/roblox-games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://elearningma.darmuj.sch.id/__statics/gudangsoal/files/coin-master-blogspot_GM406889139.pdfIn PDF document text
    • http://elearningma.darmuj.sch.id/__statics/gudangsoal/files/how-to-get-free-spins-on-coin-master-without-waiting_GM406889139.pdfIn PDF document text
    • http://elearningma.darmuj.sch.id/__statics/gudangsoal/files/coin-master-100-spin_GM406889139.pdfIn PDF document text
    • http://elearningma.darmuj.sch.id/__statics/gudangsoal/files/blogger-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://elearningma.darmuj.sch.id/__statics/gudangsoal/files/how-to-hack-golden-card-in-coin-master_GM406889139.pdfIn PDF document text
    • http://elearningma.darmuj.sch.id/__statics/gudangsoal/files/free-coins-coin-master-link_GM406889139.pdfIn PDF document text
    • http://elearningma.darmuj.sch.id/__statics/gudangsoal/files/www-robux-redeem_GM431946152.pdfIn PDF document text
    • http://elearningma.darmuj.sch.id/__statics/gudangsoal/files/robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • http://elearningma.darmuj.sch.id/__statics/gudangsoal/files/totally-free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://elearningma.darmuj.sch.id/__statics/gudangsoal/files/free-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://elearningma.darmuj.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://elearningma.darmuj.sch.id/__statics/gudangsoal/files/minecraft-pe-apk-download_GM479516143.pdfIn PDF document text
    • http://elearningma.darmuj.sch.id/__statics/gudangsoal/files/coin-master-hack-pro-gamers_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004a8d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A8D 30504 bytes
SHA-256: e6195e8d6c7db6abd5e39f47fcc86151aacdf4c7ddc007d677817eedd2a94dae
font_01_sfnt_off00008d3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D3C 3124 bytes
SHA-256: 9967c6221325a4ff3f7c4336922605f990450164c2eee2df708cc81823c6ec98
font_02_sfnt_off0000981b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x981B 17884 bytes
SHA-256: d54aa51eaaaa3e2864f0114713409e316145a0183ee6aba9be1e443db1dceb19

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