Malicious PDF — malware analysis report

Static analysis result for SHA-256 701772e2da49410b…

MALICIOUS

PDF

44.9 KB Created: 2021-05-19 09:06:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 227668bd77d985fceed16f779fec980e SHA-1: 12e62e1b2cc10d7b07454a35ff2ab971d9cb985a SHA-256: 701772e2da49410bcfa7eb69a0d79d51d27e11a3db3de24fcc2ed73ff5419053
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. It uses a callback-phone (TOAD) lure. The file embeds a large number of external links characteristic of an SEO link farm, routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 6

  • 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.
  • PDF links to a 'free generator / game hack' redirector high 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/1330123889/pro-pubg-xyz-uc-hack-game-hack PDF link annotation
    • http://rose-mari.com.ua/images/coin-master-fan-page-free-spins_GM406889139.pdfIn PDF document text
    • http://rose-mari.com.ua/images/how-to-hack-roblox-accounts-on-phone-2021_GM431946152.pdfIn PDF document text
    • http://rose-mari.com.ua/images/how-to-hack-into-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://rose-mari.com.ua/images/roblox-builders-club-free_GM431946152.pdfIn PDF document text
    • http://rose-mari.com.ua/images/how-many-villages-are-in-coin-master_GM406889139.pdfIn PDF document text
    • http://rose-mari.com.ua/images/games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://rose-mari.com.ua/images/roblox-games-to-play-for-free_GM431946152.pdfIn PDF document text
    • http://rose-mari.com.ua/images/robux-today_GM431946152.pdfIn PDF document text
    • http://rose-mari.com.ua/images/rbxoffers-com-free-robux_GM431946152.pdfIn PDF document text
    • http://rose-mari.com.ua/images/coin-master-free-coins-and-spins-hack_GM406889139.pdfIn PDF document text
    • http://rose-mari.com.ua/images/how-to-hack-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://rose-mari.com.ua/images/roblox-bloxburg-free-money_GM431946152.pdfIn PDF document text
    • http://rose-mari.com.ua/images/coin-master-daily-gift-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://rose-mari.com.ua/images/coin-master-new-link-free-spin_GM406889139.pdfIn PDF document text
    • http://rose-mari.com.ua/images/free-robux-app_GM431946152.pdfIn PDF document text
    • http://rose-mari.com.ua/images/coin-master-free-spins-iphone_GM406889139.pdfIn PDF document text
    • http://rose-mari.com.ua/images/free-mods-for-coin-master_GM406889139.pdfIn PDF document text
    • http://rose-mari.com.ua/images/roblox-studio-free_GM431946152.pdfIn PDF document text
    • http://rose-mari.com.ua/images/games-for-robux_GM431946152.pdfIn PDF document text
    • http://rose-mari.com.ua/images/robux-gift-card-free_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004641.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4641 29948 bytes
SHA-256: 5c11a6edbc647dcfbc16c2fbc37a766431f12fefd3788ed4dfc742a022136216
font_01_sfnt_off00008b77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B77 18928 bytes
SHA-256: a62f530ee6232a9362a05ff0d07a28cc952604c486fffe802ec7e7b64217a6b8

Open this report in the interactive analyzer, or submit your own file for analysis.