Malicious PDF — malware analysis report

Static analysis result for SHA-256 7551f70af772808a…

MALICIOUS

PDF

45.9 KB Created: 2021-06-07 06:52:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 5fcafb964320f90eb9aca2bc04413caa SHA-1: 9325fd69ed573a7581d11de301a13167fa4c0c8c SHA-256: 7551f70af772808a2527b451286c325210d4a9f56533b420d144898d6896dbae
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and lures users with promises of game hacks. The embedded content, though obfuscated, suggests a workflow designed to redirect users to potentially harmful websites. The primary attack vector appears to be social engineering via a malicious attachment, leading to further compromise through these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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.tw/app/431946152/what-is-the-password-for-roblox-money-hack-game-hack In PDF document text
    • http://sv-nahetal.de/images/coin-master-freebies-2021_GM406889139.pdfIn PDF document text
    • http://sv-nahetal.de/images/how-to-get-hacks-on-roblox_GM431946152.pdfIn PDF document text
    • http://sv-nahetal.de/images/minecraft-hacks-ps4_GM479516143.pdfIn PDF document text
    • http://sv-nahetal.de/images/free-tiktok-accounts-with-followers_GM835599320.pdfIn PDF document text
    • http://sv-nahetal.de/images/coin-master-free-spin-sites_GM406889139.pdfIn PDF document text
    • http://sv-nahetal.de/images/coin-master-card-collection-hack-2021_GM406889139.pdfIn PDF document text
    • http://sv-nahetal.de/images/minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://sv-nahetal.de/images/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://sv-nahetal.de/images/coin-master-hacks-no-surveys_GM406889139.pdfIn PDF document text
    • http://sv-nahetal.de/images/coin-master-daily-free-spins-link_GM406889139.pdfIn PDF document text
    • http://sv-nahetal.de/images/free-spins-and-coins-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://sv-nahetal.de/images/roblox-free-models_GM431946152.pdfIn PDF document text
    • http://sv-nahetal.de/images/minecraft-hack-2021_GM479516143.pdfIn PDF document text
    • http://sv-nahetal.de/images/clean-master-coins-hack_GM406889139.pdfIn PDF document text
    • http://sv-nahetal.de/images/coin-master-apk_GM406889139.pdfIn PDF document text
    • http://sv-nahetal.de/images/free-robux-master_GM431946152.pdfIn PDF document text
    • http://sv-nahetal.de/images/free-robux-script_GM431946152.pdfIn PDF document text
    • http://sv-nahetal.de/images/coin-master-34-4-free-download_GM406889139.pdfIn PDF document text
    • http://sv-nahetal.de/images/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://sv-nahetal.de/images/huskybuscom-free-robux_GM431946152.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
stream_004_off0000505d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x505D 26616 bytes
SHA-256: b04ef22bf6c1b981303f212590a35f3c08179fb49c05cb3b352165eda62cb50c
font_01_sfnt_off00008cf5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CF5 19680 bytes
SHA-256: 087249063728a04258be90febd40f650b5fe9282ebd175e54fe350a6f0f1c45f

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