Malicious PDF — malware analysis report

Static analysis result for SHA-256 22056d00c4068bd6…

MALICIOUS

PDF

43.2 KB Created: 2021-05-13 05:05:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: c91b021fcfab0480856b9fd5b9f97b2e SHA-1: 6ade727ae0c191a46ffcf7459ad9171df1d68761 SHA-256: 22056d00c4068bd6dc8c502dcae0d72929958a08401f1c198a5d714069a9a71f
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links, including one to a known malicious redirector infrastructure, disguised as game hack generators. The document body and extracted URLs suggest a lure for free in-game currency or hacks, which is a common social engineering tactic. The presence of multiple links to external PDFs hosted on a single domain indicates a link farm designed to drive traffic to potentially malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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 https://netcdn.xyz/app/406889139/free-spins-on-coin-master-2021-game-hack In PDF document text
    • http://www.europeancamerata.com/userfiles/files/coin-master-free-spins-promo-code_GM406889139.pdfIn PDF document text
    • http://www.europeancamerata.com/userfiles/files/free-robux-mod_GM431946152.pdfIn PDF document text
    • http://www.europeancamerata.com/userfiles/files/lastrick-com-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.europeancamerata.com/userfiles/files/free-coin-master-spins-blog_GM406889139.pdfIn PDF document text
    • http://www.europeancamerata.com/userfiles/files/minecraft-hack-2021_GM479516143.pdfIn PDF document text
    • http://www.europeancamerata.com/userfiles/files/www-claim-gg-to-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://www.europeancamerata.com/userfiles/files/how-to-get-minecraft-bedrock-for-free_GM479516143.pdfIn PDF document text
    • http://www.europeancamerata.com/userfiles/files/websites-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://www.europeancamerata.com/userfiles/files/free-robux-no-verification-no-download-2021_GM431946152.pdfIn PDF document text
    • http://www.europeancamerata.com/userfiles/files/village-coin_GM406889139.pdfIn PDF document text
    • http://www.europeancamerata.com/userfiles/files/how-do-we-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.europeancamerata.com/userfiles/files/free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://www.europeancamerata.com/userfiles/files/coin-master-codes_GM406889139.pdfIn PDF document text
    • http://www.europeancamerata.com/userfiles/files/minecraft-pe-apk_GM479516143.pdfIn PDF document text
    • http://www.europeancamerata.com/userfiles/files/free-robux-ad_GM431946152.pdfIn PDF document text
    • http://www.europeancamerata.com/userfiles/files/how-to-hack-roblox-accounts-for-robux_GM431946152.pdfIn PDF document text
    • http://www.europeancamerata.com/userfiles/files/coin-master-hack-account_GM406889139.pdfIn PDF document text
    • http://www.europeancamerata.com/userfiles/files/get-me-robux_GM431946152.pdfIn PDF document text
    • http://www.europeancamerata.com/userfiles/files/coin-master-free-spins-link-cheat_GM406889139.pdfIn PDF document text
    • http://www.europeancamerata.com/userfiles/files/how-to-get-free-spins-on-coin-master-2021-links_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_off00004990.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4990 27348 bytes
SHA-256: ab610d4382c1b6a835e8c7c704c2cceae5352de6bd88aaf737d202449bbc8a7e
font_01_sfnt_off0000867b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x867B 18288 bytes
SHA-256: e7fc04cebd192de8ea685c8f65a9790caba4d729d1f53b0455241ee170bde56f

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