Malicious PDF — malware analysis report

Static analysis result for SHA-256 957e359d667138a7…

MALICIOUS

PDF

42.9 KB Created: 2021-06-14 00:54:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-23
MD5: 8710c727b3ec02fc70bafe274b5c9d8f SHA-1: b6f7c93e3d55229449ac9dbf275f289c1614ec8b SHA-256: 957e359d667138a7f364ba4c8ca5562cb397fe0dcf30742168ddfa297838893b
220 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of free game hacks and generators to trick users into clicking malicious links. It contains numerous links to redirectors and SEO link farms, including the primary malicious URL http://netcdn.co/app/431946152/code-get-free-robux-roblox-game-hack. The document's structure and embedded links suggest an attempt to drive traffic to potentially malicious sites, likely as part of a phishing or scam campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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.co/app/431946152/code-get-free-robux-roblox-game-hack In PDF document text
    • http://katalog.iain-padangsidimpuan.ac.id/repository/coin-master-fun-free-spins_GM406889139.pdfIn PDF document text
    • http://katalog.iain-padangsidimpuan.ac.id/repository/roblox-tower-defense-simulator-hack-script_GM431946152.pdfIn PDF document text
    • http://katalog.iain-padangsidimpuan.ac.id/repository/free-robux-without-verification_GM431946152.pdfIn PDF document text
    • http://katalog.iain-padangsidimpuan.ac.id/repository/can-you-give-me-free-robux_GM431946152.pdfIn PDF document text
    • http://katalog.iain-padangsidimpuan.ac.id/repository/free-robux-no-human-verification-2021-or-survey-or-offers_GM431946152.pdfIn PDF document text
    • http://katalog.iain-padangsidimpuan.ac.id/repository/spin-coin_GM406889139.pdfIn PDF document text
    • http://katalog.iain-padangsidimpuan.ac.id/repository/free-spins-coin-master-blogspot_GM406889139.pdfIn PDF document text
    • http://katalog.iain-padangsidimpuan.ac.id/repository/is-tiktok-free-on-ipad_GM835599320.pdfIn PDF document text
    • http://katalog.iain-padangsidimpuan.ac.id/repository/moonactive-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://katalog.iain-padangsidimpuan.ac.id/repository/free-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://katalog.iain-padangsidimpuan.ac.id/repository/how-to-hack-someone-on-roblox_GM431946152.pdfIn PDF document text
    • http://katalog.iain-padangsidimpuan.ac.id/repository/links-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://katalog.iain-padangsidimpuan.ac.id/repository/roblox-highschool-hack-script-oder_GM431946152.pdfIn PDF document text
    • http://katalog.iain-padangsidimpuan.ac.id/repository/robux-com-free_GM431946152.pdfIn PDF document text
    • http://katalog.iain-padangsidimpuan.ac.id/repository/coin-master-hack-tool-v1-9-download-free_GM406889139.pdfIn PDF document text
    • http://katalog.iain-padangsidimpuan.ac.id/repository/blogger-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://katalog.iain-padangsidimpuan.ac.id/repository/how-to-get-free-robux-without-email_GM431946152.pdfIn PDF document text
    • http://katalog.iain-padangsidimpuan.ac.id/repository/claim-robux-free_GM431946152.pdfIn PDF document text
    • http://katalog.iain-padangsidimpuan.ac.id/repository/how-to-get-free-outfits-on-roblox_GM431946152.pdfIn PDF document text
    • http://katalog.iain-padangsidimpuan.ac.id/repository/get-free-spins-coin-master_GM406889139.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_off000049c5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49C5 26196 bytes
SHA-256: 872334a6e14e81606d7f2a8fe12a1199e939f3c08c5e462a99e12388125edc2e
font_01_sfnt_off000084e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84E1 18368 bytes
SHA-256: 4030ca4558d48620e2fcebe8f976c3668566caf9ceb9fb4304af5f5d66abb8c5

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