Malicious PDF — malware analysis report

Static analysis result for SHA-256 0335ecfee37fd199…

MALICIOUS

PDF

32.4 KB Created: 2021-07-04 22:15:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: f44d5ebb0eed158fd3f3c5594e361b6f SHA-1: 086b2bca09f62fd1476eb6598e4012a07255d6d3 SHA-256: 0335ecfee37fd1996dc4be478fd3fa14381bd2b4326dad4243709c875afef030
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors and lures users with promises of free game currency or hacks. The primary malicious URL identified is http://netcdn.tw/app/431946152/how-to-get-100-robux-for-free-game-hack, which is associated with a 'free generator' scam. The document body and embedded links strongly suggest a phishing or scamming attempt, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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.tw/app/431946152/how-to-get-100-robux-for-free-game-hack In PDF document text
    • http://smpn1sda.sch.id/slims/repository/free-minecraft-premium-account_GM479516143.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/minecraft-112-hacked-client_GM479516143.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/hack-para-dragon-ball-rage-2021-roblox_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/google-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/roblox-10-dollar-gift-card-free_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/coin-master-hack-2021-free_GM406889139.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/minecraft-cracked-client_GM479516143.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/minecraft-18-9-hacked-client_GM479516143.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/how-to-get-a-free-roblox-account_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/roblox-free-body_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/freecoins_GM406889139.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/hack-roblox-como-tener-robux-gratis-2021-octubre_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/tower-of-hell-roblox-hack_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/roblox-hack-site-no-verification_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/roblox-logo-t-shirt-free_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/hack-pants-roblox_GM431946152.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/coin-master-instagram-free-spins_GM406889139.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/free-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • http://smpn1sda.sch.id/slims/repository/free-robux-no-human-verification-or-survey-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
font_00_sfnt_off00002a37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2A37 21388 bytes
SHA-256: d83b0fb81ef9274ad1bcf52aafe6037568bc48dd7e6cfeb313d9d86517610a05
font_01_sfnt_off000058fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x58FD 19264 bytes
SHA-256: ddcaa731095bd34e6951b50a1ad93647ccdf135a8260edd799a5aaff4024c1d7

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