Malicious PDF — malware analysis report

Static analysis result for SHA-256 98ac815bef95b17d…

MALICIOUS

PDF

46.5 KB Created: 2021-05-11 03:35:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: dd21e99a0ef281c12dce545a28e26a0b SHA-1: ffa13e95e94e5a18d91753201ea0d7c55d4a1ea9 SHA-256: 98ac815bef95b17d52685db2ede899d266c920bc2f3f43fd4da3373ae38a7ebf
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure of 'game hacks' and 'free currency' to entice users into clicking malicious links. The primary link directs to a known malicious redirector infrastructure, suggesting a phishing or malware distribution campaign. Although no scripts were explicitly extracted, the PDF structure and embedded links strongly indicate a malicious intent to redirect users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

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/406889139/coin-master-hack-apk-game-hack In PDF document text
    • http://www.eurologistiki.gr/images/robux-games_GM431946152.pdfIn PDF document text
    • http://www.eurologistiki.gr/images/how-to-hack-roblox-accounts-for-robux_GM431946152.pdfIn PDF document text
    • http://www.eurologistiki.gr/images/how-do-you-get-free-food-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.eurologistiki.gr/images/coin-master-hack-pc-cheat-engine_GM406889139.pdfIn PDF document text
    • http://www.eurologistiki.gr/images/coin-master-email-rewards_GM406889139.pdfIn PDF document text
    • http://www.eurologistiki.gr/images/free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://www.eurologistiki.gr/images/how-to-hack-coin-master-game-without-verification_GM406889139.pdfIn PDF document text
    • http://www.eurologistiki.gr/images/infinite-robux_GM431946152.pdfIn PDF document text
    • http://www.eurologistiki.gr/images/coin-master-hack-free-spins_GM406889139.pdfIn PDF document text
    • http://www.eurologistiki.gr/images/robux-codes_GM431946152.pdfIn PDF document text
    • http://www.eurologistiki.gr/images/how-to-get-free-skins-in-minecraft_GM479516143.pdfIn PDF document text
    • http://www.eurologistiki.gr/images/how-to-hack-coin-master-facebook_GM406889139.pdfIn PDF document text
    • http://www.eurologistiki.gr/images/how-to-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.eurologistiki.gr/images/free-daily-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.eurologistiki.gr/images/roblox-hacked-version_GM431946152.pdfIn PDF document text
    • http://www.eurologistiki.gr/images/how-to-get-100-robux-for-free_GM431946152.pdfIn PDF document text
    • http://www.eurologistiki.gr/images/coin-master-hacks-for-gold-cards_GM406889139.pdfIn PDF document text
    • http://www.eurologistiki.gr/images/free-robux-rewards_GM431946152.pdfIn PDF document text
    • http://www.eurologistiki.gr/images/wurst-client-download_GM479516143.pdfIn PDF document text
    • http://www.eurologistiki.gr/images/how-to-get-gold-cards-on-coin-master-hack_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004b2c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B2C 28272 bytes
SHA-256: 708ff24a8a701f468099ca196ce10e1577337e1783fca674e916add6d77d19ea
font_01_sfnt_off000089a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89A1 3124 bytes
SHA-256: 9967c6221325a4ff3f7c4336922605f990450164c2eee2df708cc81823c6ec98
font_02_sfnt_off00009480.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9480 17892 bytes
SHA-256: f939fda97690d6a809d743b342add8ec97984f5e978608423f32dd39679c4d64

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