Malicious PDF — malware analysis report

Static analysis result for SHA-256 9a2b1de090fd25da…

MALICIOUS

PDF

45.7 KB Created: 2021-05-13 23:31:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 546a66f6e2a75719c04248e91f5aaaa3 SHA-1: 26d1d225705338f2be555b684e985d7fd5c588a5 SHA-256: 9a2b1de090fd25daefa9ddc78ae94894acefb777258953f86f17350ee52e64eb
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document employs a common lure of free game currency and hacks to trick users into clicking malicious links. The document contains multiple embedded URLs that redirect to potentially harmful content, including a known malicious redirector. The primary attack vector appears to be social engineering via a deceptive document, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9432

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-hack-spins-2021-game-hack In PDF document text
    • http://schlossschaenke-andernach.de/images/how-to-get-free-robux-fast_GM431946152.pdfIn PDF document text
    • http://schlossschaenke-andernach.de/images/how-do-you-earn-free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://schlossschaenke-andernach.de/images/give-free-robux_GM431946152.pdfIn PDF document text
    • http://schlossschaenke-andernach.de/images/play-roblox-free-online_GM431946152.pdfIn PDF document text
    • http://schlossschaenke-andernach.de/images/get-robux-today_GM431946152.pdfIn PDF document text
    • http://schlossschaenke-andernach.de/images/coin-master-hack-2021-download_GM406889139.pdfIn PDF document text
    • http://schlossschaenke-andernach.de/images/minecraft-free-download-android-apk-014-0_GM479516143.pdfIn PDF document text
    • http://schlossschaenke-andernach.de/images/how-to-hack-and-get-free-robux_GM431946152.pdfIn PDF document text
    • http://schlossschaenke-andernach.de/images/7-year-old-roblox_GM431946152.pdfIn PDF document text
    • http://schlossschaenke-andernach.de/images/claim-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://schlossschaenke-andernach.de/images/free-spin-link-coin-master-app_GM406889139.pdfIn PDF document text
    • http://schlossschaenke-andernach.de/images/get-me-robux-for-free_GM431946152.pdfIn PDF document text
    • http://schlossschaenke-andernach.de/images/free-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • http://schlossschaenke-andernach.de/images/hack-coin-master-no-survey_GM406889139.pdfIn PDF document text
    • http://schlossschaenke-andernach.de/images/javascript-free-robux_GM431946152.pdfIn PDF document text
    • http://schlossschaenke-andernach.de/images/coin-master-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://schlossschaenke-andernach.de/images/free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://schlossschaenke-andernach.de/images/free-coin-master-spin-and-coin-link_GM406889139.pdfIn PDF document text
    • http://schlossschaenke-andernach.de/images/where-can-i-get-free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://schlossschaenke-andernach.de/images/minecraft-pe-hacks_GM479516143.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_off00004ca6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4CA6 24420 bytes
SHA-256: 4193bb9888f2566cb90aa4928d506c2a88a1f01ae7ab381d9eaac3852cef4f99
font_01_sfnt_off00008366.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8366 3560 bytes
SHA-256: c953d730e49f69c7d62e02a926729ae4a31de13d9a976dc4a95b39cf47066c93
font_02_sfnt_off00008fec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FEC 18296 bytes
SHA-256: 61cecf6a4c388f1fb11619cb83ff3032a0515dcce7f43e45d64b24393b5c3288

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