Malicious PDF — malware analysis report

Static analysis result for SHA-256 88a49c2308ef9cd4…

MALICIOUS

PDF

42.6 KB Created: 2021-05-13 16:38:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 5d6f84e06e528b9fa5c07760d60f75ba SHA-1: 56b65f8e96b1f4dcef8cf0b4dad7ff3a9166e978 SHA-256: 88a49c2308ef9cd489eb5cb479c4bbd248803ac13c5aa75858cc6ed93c26511e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to known malicious infrastructure, specifically promoting "free generator / game hack" lures. The ML classifier also strongly indicated maliciousness. The document body and embedded links suggest a phishing attempt to trick users into visiting malicious sites, likely to download further malware or engage in credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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-free-spins-hack-without-human-verification-game-hack In PDF document text
    • http://laboraltoledo.com/images/how-do-you-get-free-roebucks_GM431946152.pdfIn PDF document text
    • http://laboraltoledo.com/images/minecraft-server-hacks_GM479516143.pdfIn PDF document text
    • http://laboraltoledo.com/images/coin-master-hack-version-2021_GM406889139.pdfIn PDF document text
    • http://laboraltoledo.com/images/coin-master-heaven-free-spins-link_GM406889139.pdfIn PDF document text
    • http://laboraltoledo.com/images/easy-robux-generator_GM431946152.pdfIn PDF document text
    • http://laboraltoledo.com/images/how-to-get-free-robux-2021-easy_GM431946152.pdfIn PDF document text
    • http://laboraltoledo.com/images/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://laboraltoledo.com/images/coin-master-free-spins-link-app-download_GM406889139.pdfIn PDF document text
    • http://laboraltoledo.com/images/coin-master-free-daily-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://laboraltoledo.com/images/minecraft-logo-maker-free_GM479516143.pdfIn PDF document text
    • http://laboraltoledo.com/images/free-spins-coin-master-blogspot_GM406889139.pdfIn PDF document text
    • http://laboraltoledo.com/images/roblox-18_GM431946152.pdfIn PDF document text
    • http://laboraltoledo.com/images/coin-master-free-cards-and-spin-link_GM406889139.pdfIn PDF document text
    • http://laboraltoledo.com/images/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://laboraltoledo.com/images/minecraft-iphone-free_GM479516143.pdfIn PDF document text
    • http://laboraltoledo.com/images/minecraft-noob-vs-pro-vs-hacker-vs-god_GM479516143.pdfIn PDF document text
    • http://laboraltoledo.com/images/free-minecraft-java-edition-codes_GM479516143.pdfIn PDF document text
    • http://laboraltoledo.com/images/coin-master-free-spins-link-blogspot-today_GM406889139.pdfIn PDF document text
    • http://laboraltoledo.com/images/minecraft-free-edition_GM479516143.pdfIn PDF document text
    • http://laboraltoledo.com/images/claim-free-spins-coin-master_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
stream_003_off00004a79.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A79 24552 bytes
SHA-256: 59a52dc919014f36495fbceae64b3f65924c4d745069f1f43032de9b68241da2
font_01_sfnt_off00008259.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8259 18952 bytes
SHA-256: bbe995309b6761320a89de429a491d1b27525b5c8b766f3497e3cab7bbe78ffa

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