Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3ae9db319f0fd01…

MALICIOUS

PDF

35.3 KB Created: 2021-06-28 16:52:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 3b727e568f6d9eb4a7c5b4cc880f520c SHA-1: ad76d78166dc316053f132eb9322f165f86b6726 SHA-256: d3ae9db319f0fd0118b5a117d31d48a0a853df9f0dcee2b2f237aed840facd54
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure of free game currency and accounts to trick users into clicking malicious links. The primary link directs to a known malicious redirector infrastructure, likely serving as a gateway to further malicious content or phishing pages. The document's content and embedded URLs strongly suggest a phishing or scam campaign.

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.co/app/431946152/free-roblox-accounts-with-robux-2021-april-game-hack In PDF document text
    • https://www.legclub.org/uploads/files/files/free-robux-easy_GM431946152.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/coin-master-free-spins-link-today-new-2021_GM406889139.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/coin-master-hack-cydia_GM406889139.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/coin-master-free-spins-promo-code_GM406889139.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/redeem-roblox-cards-free-codes-2021_GM431946152.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/coin-master-hack-unlimited-spins-apk-download_GM406889139.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/minecraft-pc-free_GM479516143.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/game-give-free-robux_GM431946152.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/free-robux-hack-generator-2021_GM431946152.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/roblox-robux-hack-generator-2021_GM431946152.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/coin-master-free-spin-27_GM406889139.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/free-robux-without-human-verification-and-survey_GM431946152.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/free-robux-come_GM431946152.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/how-to-buy-robux-for-free_GM431946152.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/www-robux-redeem_GM431946152.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/minecraft-coins-free_GM479516143.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/how-to-get-free-pokeballs-in-pokemon-go-2021_GM1094591345.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/minecraft-pocket-edition-free_GM479516143.pdfIn PDF document text
    • https://www.legclub.org/uploads/files/files/free-coin-and-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 6

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_off0000310f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x310F 22552 bytes
SHA-256: 30cabf000566966db52638df07beab45eda79292b40f7c252dea4cb3a47f4316
font_01_sfnt_off00006260.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6260 19956 bytes
SHA-256: ba6ff8784ae58a97c5c1a6eb5ba8721c311ef75ed2aed2ece8e8aaccc8cd5910

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