Malicious PDF — malware analysis report

Static analysis result for SHA-256 052116f2dbb9e3f5…

MALICIOUS

PDF

42.8 KB Created: 2021-05-14 12:48:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 551b4a988a59ccdf621f7b8329a509a8 SHA-1: 39ba43e860ffa029c9b1469a1f2476556457e0ec SHA-256: 052116f2dbb9e3f540ea807011b97e0250cb83543385c2e63c000d87c2400b2c
180 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains multiple links to websites advertising game hacks and cheats, including a known malicious redirector. One link points directly to a PDF hosted on an IP address, which is likely a further lure or payload. The document body and embedded links strongly suggest a social engineering attempt to trick users into downloading potentially malicious files.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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.
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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/coin-master-cheat-engine-hack-game-hack In PDF document text
    • http://1.179.208.67/ckfinder/userfiles/files/apk-hack-coin-master_GM406889139.pdfPDF link annotation
    • http://1.179.208.67/ckfinder/userfiles/files/oprewards-login_GM431946152.pdfIn PDF document text
    • http://1.179.208.67/ckfinder/userfiles/files/coin-master-hack-no-human-verification-2021_GM406889139.pdfIn PDF document text
    • http://1.179.208.67/ckfinder/userfiles/files/free-spins-coin-master-links-blogger_GM406889139.pdfIn PDF document text
    • http://1.179.208.67/ckfinder/userfiles/files/coin-master-hack-without-root_GM406889139.pdfIn PDF document text
    • http://1.179.208.67/ckfinder/userfiles/files/free-robux-on-phone_GM431946152.pdfIn PDF document text
    • http://1.179.208.67/ckfinder/userfiles/files/minecraft-hacks-ps4_GM479516143.pdfIn PDF document text
    • http://1.179.208.67/ckfinder/userfiles/files/free-robux-hack-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://1.179.208.67/ckfinder/userfiles/files/daily-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://1.179.208.67/ckfinder/userfiles/files/minecraft-free-download-iphone_GM479516143.pdfIn PDF document text
    • http://1.179.208.67/ckfinder/userfiles/files/get-free-spins-coin-master-link_GM406889139.pdfIn PDF document text
    • http://1.179.208.67/ckfinder/userfiles/files/how-to-get-free-things-on-roblox_GM431946152.pdfIn PDF document text
    • http://1.179.208.67/ckfinder/userfiles/files/hacks-for-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • http://1.179.208.67/ckfinder/userfiles/files/robux-free-promo-codes_GM431946152.pdfIn PDF document text
    • http://1.179.208.67/ckfinder/userfiles/files/roblox-free-followers_GM431946152.pdfIn PDF document text
    • http://1.179.208.67/ckfinder/userfiles/files/free-minecraft-mods-for-xbox-one_GM479516143.pdfIn PDF document text
    • http://1.179.208.67/ckfinder/userfiles/files/minecraft-hack-client-download_GM479516143.pdfIn PDF document text
    • http://1.179.208.67/ckfinder/userfiles/files/coin-master-cheats-2021_GM406889139.pdfIn PDF document text
    • http://1.179.208.67/ckfinder/userfiles/files/free-robux-codes-not-used_GM431946152.pdfIn PDF document text
    • http://1.179.208.67/ckfinder/userfiles/files/is-coin-master-hack-safe_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_off00004c19.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C19 24724 bytes
SHA-256: 54733e1052bf7967aeca3a477535485f9e8a8f670fbf8223c9118bdd27f01a75
font_01_sfnt_off0000851a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x851A 18172 bytes
SHA-256: d0f3f34e43a4a3b79cade8342c3aea289cdc0fa42454b947c02aaf2ecfd2669a

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