Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5bf89e9de587d1b…

MALICIOUS

PDF

47.3 KB Created: 2021-06-13 16:04:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 34db5839c553307b5a2abd72c185be0c SHA-1: 85391d0d98c1e8ebbd80bdb8b75ad9d80f1f144b SHA-256: f5bf89e9de587d1b0b2642d5778ff2e9fa4d9609779830be8e21b75f514d114a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors, disguised as "free generator" or "game hack" lures. The primary link directs users to 'http://netcdn.co/app/431946152/how-to-get-free-robux-no-verification-on-ipad-game-hack', which is associated with malicious redirector infrastructure. The document body and embedded URLs suggest a social engineering tactic to entice users into clicking these links, likely leading to further malicious content or malware downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

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 http://netcdn.co/app/431946152/how-to-get-free-robux-no-verification-on-ipad-game-hack In PDF document text
    • http://force-seniorklub.dk/images/pubg-uc-2021_GM1330123889.pdfIn PDF document text
    • http://force-seniorklub.dk/images/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://force-seniorklub.dk/images/coin-master-gold-cards-hack_GM406889139.pdfIn PDF document text
    • http://force-seniorklub.dk/images/hack-robux-2021-pc_GM431946152.pdfIn PDF document text
    • http://force-seniorklub.dk/images/coin-master-root-hack_GM406889139.pdfIn PDF document text
    • http://force-seniorklub.dk/images/free-robux-withdraw_GM431946152.pdfIn PDF document text
    • http://force-seniorklub.dk/images/free-roblox-hack-us_GM431946152.pdfIn PDF document text
    • http://force-seniorklub.dk/images/80-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://force-seniorklub.dk/images/roblox-free-clothes-catalog_GM431946152.pdfIn PDF document text
    • http://force-seniorklub.dk/images/hack-crack-for-coin-master-currency_GM406889139.pdfIn PDF document text
    • http://force-seniorklub.dk/images/free-robux-codes-francais_GM431946152.pdfIn PDF document text
    • http://force-seniorklub.dk/images/roblox-games-that-cheat-engine-works-on_GM431946152.pdfIn PDF document text
    • http://force-seniorklub.dk/images/how-to-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://force-seniorklub.dk/images/roblox-script-hack_GM431946152.pdfIn PDF document text
    • http://force-seniorklub.dk/images/coin-master-50-spin-link_GM406889139.pdfIn PDF document text
    • http://force-seniorklub.dk/images/roblox-avatar-editor-free_GM431946152.pdfIn PDF document text
    • http://force-seniorklub.dk/images/minecraft-free-download-apk-softonic_GM479516143.pdfIn PDF document text
    • http://force-seniorklub.dk/images/free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://force-seniorklub.dk/images/google-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://force-seniorklub.dk/images/how-to-get-free-robux-in-meep-city-2021_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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000051c2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x51C2 29236 bytes
SHA-256: 12790c16e8a773ccadf9fc0bafd882838c2787ced357cfc6fc9dfa3bcc49419d
font_01_sfnt_off000093fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x93FA 19116 bytes
SHA-256: 1dd4d09a49496027c4edae9fbeab333aab1861891cf3bfda23d5059955c01327

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