Malicious PDF — malware analysis report

Static analysis result for SHA-256 203e6d7e40fd2455…

MALICIOUS

PDF

34.5 KB Created: 2021-06-30 04:48:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 969bb0c010db34e87477d79f3f06c7d3 SHA-1: 81827bb5cb663fe8d6d569ba521c0d00b839ca33 SHA-256: 203e6d7e40fd24553bcc04b36af63ce486e564c675ae2fa8f2ab825c23421c34
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links to websites that promise free in-game currency and hacks, such as 'free robux' and 'coin master free spins'. These links are likely part of a scam or phishing operation designed to trick users into visiting malicious sites. The presence of a download button lure and the ML classifier's high confidence score further support the malicious nature of this document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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-robux-no-survreys-game-hack In PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/roblox-verification_GM431946152.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/coin-master-free-spin-ml_GM406889139.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/how-to-speed-hack-on-roblox-jailbreak-2021_GM431946152.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/free-robux-scam_GM431946152.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/how-to-get-free-robux-rblx-gg_GM431946152.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/hack-roblox-steve-one-piece-roblox-auto-farm-chest_GM431946152.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/free-account-roblox-biz_GM431946152.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/how-to-get-free-robux-2021-no-suvey-n0-human_GM431946152.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/daily-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/free-spins-and-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/free-robux-no-survey-or-verification-or-download_GM431946152.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/free-roblox-cards-pin-number_GM431946152.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/where-can-i-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/how-do-you-get-robux-for-free-no-clickbate_GM431946152.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/how-to-get-minecraft-for-free-ios_GM479516143.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/roblox-free-logo7_GM431946152.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/how-to-hack-roblox-on-mobile_GM431946152.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/free-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/free-robux-gift-card-codes-2021_GM431946152.pdfIn PDF document text
    • http://aleshashop.net/uploaded_files/userfiles/files/free-minecraft-pe-server_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003128.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3128 22084 bytes
SHA-256: 512fc09051e1ead7787dbfd2f2372891dd6406d450e0ec7b7b098770ccb98908
font_01_sfnt_off00006201.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6201 19012 bytes
SHA-256: 5dd077a6f21f146336ab19eaf141ab8a17d4683ff45581f871af933496ff6c1b

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