Malicious PDF — malware analysis report

Static analysis result for SHA-256 67ea8caeeaffed28…

MALICIOUS

PDF

64.4 KB Created: 2021-02-15 20:30:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 69b55c307825f0ad8f73f8fa8cf3a8b5 SHA-1: c7887dbfb091da26a3c4bbdd2afa22a9168e1d62 SHA-256: 67ea8caeeaffed282c1ad4e35688f4c999373c65ecc0c4fe6d1c970bdc34f1eb
254 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://yafferge.ru/123?utm_term=2019+international+prostar+warning+lights In PDF document text
    • http://zoomita.fun/astrosyn_stepper_motor_datasheetyu8h9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421039/normal_5ff68530302f4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454673/normal_5feb94ddca3b7.pdfIn PDF document text
    • https://widafesisitix.weebly.com/uploads/1/3/5/3/135321065/bufifur.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459182/normal_5fdfeece49592.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478137/normal_60127c71ecd16.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378834/normal_5fed689e04a6e.pdfIn PDF document text
    • http://4gusevshop.space/the_very_best_songs_offline_geesyjbjx.pdfIn PDF document text
    • https://likizosuzi.weebly.com/uploads/1/3/4/8/134886942/zuguzuvudet_fowizanavurafo_depizubezapobe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385202/normal_5fda63b42a289.pdfIn PDF document text
    • https://tewawabuse.weebly.com/uploads/1/3/1/4/131437503/e77bfa8.pdfIn PDF document text
    • http://naturka.space/94132026531uco1i.pdfIn PDF document text
    • https://kifoguwo.weebly.com/uploads/1/3/1/3/131383532/516450.pdfIn PDF document text
    • https://roxabagoxe.weebly.com/uploads/1/3/1/8/131857818/8595736.pdfIn PDF document text
    • https://cdn.sqhk.co/xedogigiloli/chiLKgf/72430664134.pdfIn PDF document text
    • http://videohost.space/39332154558tbnyz.pdfIn PDF document text
    • https://xavaruren.weebly.com/uploads/1/3/1/3/131383751/fed59878.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425908/normal_5fe3bbbf86cd4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bf98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF98 5560 bytes
SHA-256: 06ca7ec994e37ccf461c47fbf5448bc2b492d8bc209e15ae4e7d5c7a0079f6e5
font_01_sfnt_off0000d28c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD28C 10000 bytes
SHA-256: 472ea48df76bb05a961a160427ef556cecf84e3211e4d9bed1334794f603de8f