Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c9c629c0bd9e179…

MALICIOUS

PDF

35.4 KB Created: 2021-07-05 13:59:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: aa091edb88d2d47bf2fd76930a5e6f9b SHA-1: 30ec91fc63e4adc1e0893f0b8243b2cf5896b366 SHA-256: 7c9c629c0bd9e179687f8ef845084ff7b613f92e755f6c2c227e138fcc43339e
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links designed to lure users into clicking on what appear to be game hack generators and free Robux offers. These links lead to a redirector infrastructure, which is a common tactic for distributing malware or phishing pages. The document's content and the presence of multiple external links strongly suggest a phishing or scam attempt, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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.
  • 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.
  • 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/406889139/coin-master-3rd-village-free-2021-gift-card-game-hack In PDF document text
    • http://balitgetas.co.id/pustaka/repository/how-do-you-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/how-to-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/roblox-build-a-boat-free-vip-servers_GM431946152.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/links-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/how-to-get-free-robux-generator-without-human-verification_GM431946152.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/coin-master-free-spins-link-today-new-2021_GM406889139.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/how-to-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/hack-roblox-script-pastebin_GM431946152.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/are-there-free-roblox-game_GM431946152.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/free-card-link-coin-master_GM406889139.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/coin-master-tiradas-gratis-2021_GM406889139.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/how-to-get-free-robux-fast-and-easy_GM431946152.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/classac-building-club-roblox-free_GM431946152.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/free-spins-and-coins-coin-master_GM406889139.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/moonactive-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/free-robux-giveaway-twitch_GM431946152.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/free-robux-no-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/free-robux-wheel_GM431946152.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/robux-hacks-2021_GM431946152.pdfIn PDF document text
    • http://balitgetas.co.id/pustaka/repository/free-minecraft-pe-server_GM479516143.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_002_off000032bf.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x32BF 22688 bytes
SHA-256: 6414d4489b21ae658e012df2de0a0f29acc1b5d9e47a5a36ec8531461da73afa
font_01_sfnt_off00006573.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6573 18956 bytes
SHA-256: bdb9740de69c1241ca5e9a478756cf5f52269e036c7623e09abf4ff81ed82c51

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