Malicious PDF — malware analysis report

Static analysis result for SHA-256 482e27e28f1020ad…

MALICIOUS

PDF

34.4 KB Created: 2021-07-03 18:43:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 42536e6414e361daa860277017cc1d91 SHA-1: 1572b84546f57fb324d0b220e55ae50d703a925f SHA-256: 482e27e28f1020ad160996d121ffeebe511bd33a443786ef0bf74e6a757f1741
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a lure related to game hacks and free spins, which is a common social engineering tactic. It directly links to a known malicious redirector infrastructure, indicating an intent to lead the user to a malicious site. The ML classifier also strongly flagged this PDF as malicious.

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/how-can-i-get-free-spins-on-coin-master-game-hack In PDF document text
    • https://www.elearning.mitapasirsakti.sch.id/__statics/gudangsoal/files/robux-free-roblox-2021_GM431946152.pdfIn PDF document text
    • https://www.elearning.mitapasirsakti.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-inspect_GM431946152.pdfIn PDF document text
    • https://www.elearning.mitapasirsakti.sch.id/__statics/gudangsoal/files/rbx-land-free-robux_GM431946152.pdfIn PDF document text
    • https://www.elearning.mitapasirsakti.sch.id/__statics/gudangsoal/files/minecraft-free-computer-game_GM479516143.pdfIn PDF document text
    • https://www.elearning.mitapasirsakti.sch.id/__statics/gudangsoal/files/coin-master-ios-gods-hack_GM406889139.pdfIn PDF document text
    • https://www.elearning.mitapasirsakti.sch.id/__statics/gudangsoal/files/is-roblox-free-on-pc_GM431946152.pdfIn PDF document text
    • https://www.elearning.mitapasirsakti.sch.id/__statics/gudangsoal/files/coin-master-free-spins-hacktman_GM406889139.pdfIn PDF document text
    • https://www.elearning.mitapasirsakti.sch.id/__statics/gudangsoal/files/2021-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.elearning.mitapasirsakti.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • https://www.elearning.mitapasirsakti.sch.id/__statics/gudangsoal/files/free-clothing-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.elearning.mitapasirsakti.sch.id/__statics/gudangsoal/files/free-coin-master-spins-hack_GM406889139.pdfIn PDF document text
    • https://www.elearning.mitapasirsakti.sch.id/__statics/gudangsoal/files/counter-blox-roblox-offensive-hack-v3rmillion_GM431946152.pdfIn PDF document text
    • https://www.elearning.mitapasirsakti.sch.id/__statics/gudangsoal/files/get-free-roblox_GM431946152.pdfIn PDF document text
    • https://www.elearning.mitapasirsakti.sch.id/__statics/gudangsoal/files/como-hackear-roblox-2021-robux_GM431946152.pdfIn PDF document text
    • https://www.elearning.mitapasirsakti.sch.id/__statics/gudangsoal/files/500-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://www.elearning.mitapasirsakti.sch.id/__statics/gudangsoal/files/free-coin-master-spins-for-today_GM406889139.pdfIn PDF document text
    • https://www.elearning.mitapasirsakti.sch.id/__statics/gudangsoal/files/games-that-give-free-robux_GM431946152.pdfIn PDF document text
    • https://www.elearning.mitapasirsakti.sch.id/__statics/gudangsoal/files/archery-master-3d-coins-hack_GM406889139.pdfIn PDF document text
    • https://www.elearning.mitapasirsakti.sch.id/__statics/gudangsoal/files/coin-master-free-spins-blogspot_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_off00003261.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3261 22220 bytes
SHA-256: 3cc9650e1037b16b3e665fa579b8ac53cf71af66b385457e9c0e5b6c8a5ec214
font_01_sfnt_off000063ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63AE 18336 bytes
SHA-256: 37ca97c2691b43cd452b048f4f7c78c5ad4d0dd2b0202caad78cb0ffb9f2e73b

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