Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d5d267da15dec86…

MALICIOUS

PDF

35.8 KB Created: 2021-07-04 17:08:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 3268a154b8d9160d4b1f087e5dd257c9 SHA-1: ab47eb3e6a6c1f79a71beb0e0ec229b6aa19868a SHA-256: 8d5d267da15dec86216664c783df10f63aa9d4676cf04b53128d452a969ba24c
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by an ML classifier. 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 5

  • 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.
  • 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 http://netcdn.tw/app/479516143/minecraft-windows-10-hacked-client-game-hack PDF link annotation
    • http://sdn4-wates.sch.id/akasia/repository/promo-codes-for-free-robux_GM431946152.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/moonactive-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/coin-master-daily-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/roblox-hack-com-2021_GM431946152.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/robuxian-com-free-robux-code-generator-roblox-code-generator_GM431946152.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/fast-run-hack-roblox-murder-mystery_GM431946152.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/free-roblox-aimbot-in-every-game-for-mac_GM431946152.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/roblox-hack-robux-download-tool_GM431946152.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/link-for-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/free-robux-no-gift-card_GM431946152.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/v3rmillion-free-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/download-skin-roblox-free_GM431946152.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/hack-roblox-dungeon-quest_GM431946152.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/buy-stampycat-skin-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/how-to-et-free-robux-on-roblox-and-bc_GM431946152.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/roblox-hacks-for-ipad_GM431946152.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/pastebin-hack-roblox-free-robux_GM431946152.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/coin-master-hack-8-ball-pool_GM406889139.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/is-there-a-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://sdn4-wates.sch.id/akasia/repository/how-to-get-free-roblox-toys_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_off00003354.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3354 22940 bytes
SHA-256: 4fb26b9f0a643fbf908ae04e9443c490b8b05547409f8612363ca4140c85e511
font_01_sfnt_off000066dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66DD 19056 bytes
SHA-256: cf25c1e073cb72c1ef0c5f26106c3c01589224d1b658977947a7aa510d1ce141

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