Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c7ff238a37703a1…

MALICIOUS

PDF

33.3 KB Created: 2021-06-19 08:42:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 299786f281c55ca015a89c4dcf8057f6 SHA-1: f3543264faa80e91f5469209d8dce1cdd4152c30 SHA-256: 1c7ff238a37703a158bc652d7e33f0cf7923dd35ce50e20fa09d3925d537c316
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to redirector infrastructure and external sites offering game hacks and generators, indicative of a phishing or malware distribution lure. The ML classifier strongly flagged this PDF as malicious. The presence of embedded URLs and a call-to-action button further supports the malicious intent.

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/479516143/minecraft-apk-114-4-game-hack In PDF document text
    • https://imagetravelnepal.com/userfiles/files/free-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/minecraft-logo-maker-free_GM479516143.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/how-to-hack-coin-master-facebook_GM406889139.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/spin-and-coin-link_GM406889139.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/real-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/how-do-i-get-robux_GM431946152.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/coin-master-hackcom-xyz_GM406889139.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/roblox-redeem_GM431946152.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/real-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/how-to-download-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/gaming-dunia-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/free-robux-hack-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/freespinandcoin_GM406889139.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/free-robux-cards_GM431946152.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/haktuts-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/how-to-hack-a-roblox-account-2021_GM431946152.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/how-to-get-free-roblox-gift-cards_GM431946152.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/free-coins-coin-master-ios_GM406889139.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/coin-master-hack-no-verification-no-signup_GM406889139.pdfIn PDF document text
    • https://imagetravelnepal.com/userfiles/files/how-to-get-free-spins-on-coin-master-without-verification_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_off00002f60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F60 21880 bytes
SHA-256: 3b5069e8b0c02807ba5e01ff49cd47da5ab6814d4bf7f64b55cf26020068bcfa
font_01_sfnt_off00005f56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F56 18372 bytes
SHA-256: cfa1744e15de76beef4250e2e8e5213b12ebb5623f2a1aca1772815b9c3f87cb

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