Malicious PDF — malware analysis report

Static analysis result for SHA-256 52b6eb6fb08e486a…

MALICIOUS

PDF

49.3 KB Created: 2021-05-18 00:33:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 4e3005edd5595120622960c25e0c06c8 SHA-1: 5d47fa48675ffc445a041a9dd32e3ec854712267 SHA-256: 52b6eb6fb08e486a1f2440794e49463494a0a54866d796c5a000e697b976bc3b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that are flagged as malicious redirectors, specifically leading to a site offering 'Roblox Free Play game hack'. The document body, though partially corrupted, also contains similar URLs. This suggests the PDF is designed as a lure to direct users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8642

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/431946152/roblox-free-play-game-hack In PDF document text
    • https://www.belgium-archery.be/images/free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • https://www.belgium-archery.be/images/free-roblox-website_GM431946152.pdfIn PDF document text
    • https://www.belgium-archery.be/images/hack-coin-master-download-ios_GM406889139.pdfIn PDF document text
    • https://www.belgium-archery.be/images/how-to-play-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • https://www.belgium-archery.be/images/how-do-i-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.belgium-archery.be/images/coin-master-free-spin-link-today-2021_GM406889139.pdfIn PDF document text
    • https://www.belgium-archery.be/images/coin-master-free-gifts_GM406889139.pdfIn PDF document text
    • https://www.belgium-archery.be/images/moonactive-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://www.belgium-archery.be/images/moonactive-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • https://www.belgium-archery.be/images/coin-master-70-spin-link-2021_GM406889139.pdfIn PDF document text
    • https://www.belgium-archery.be/images/coin-master-hack-ios-no-verification_GM406889139.pdfIn PDF document text
    • https://www.belgium-archery.be/images/minecraft-apk-free-download_GM479516143.pdfIn PDF document text
    • https://www.belgium-archery.be/images/coin-master-stop-attack-hack_GM406889139.pdfIn PDF document text
    • https://www.belgium-archery.be/images/coinmaster-spin-ml-link_GM406889139.pdfIn PDF document text
    • https://www.belgium-archery.be/images/free-robux-no-human-verification-and-no-survey_GM431946152.pdfIn PDF document text
    • https://www.belgium-archery.be/images/coinmaster_GM406889139.pdfIn PDF document text
    • https://www.belgium-archery.be/images/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
    • https://www.belgium-archery.be/images/fighting-free-card-coin-master_GM406889139.pdfIn PDF document text
    • https://www.belgium-archery.be/images/free-robux-earn_GM431946152.pdfIn PDF document text
    • https://www.belgium-archery.be/images/claim-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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000482d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x482D 27540 bytes
SHA-256: 8cb81148ac3a6d247c5563a5bd40cab0f61d03a2b81a878b605adf65f106f653
font_01_sfnt_off000086c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86C8 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off000090ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90AE 5596 bytes
SHA-256: 9a13c2580265a78e8a7257496a31ee0055738af7e20a5661c2902efe4bf05ce5
font_03_sfnt_off00009d55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D55 18512 bytes
SHA-256: eed476aa069bc09357c43ec056cace655c39995f669be6a5bb4491b7d3b62334

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