Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea3020eca4bd1171…

MALICIOUS

PDF

68.8 KB Created: 2021-02-23 19:13:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: d3129c55f7ccf43842ff94676f0d4db6 SHA-1: 7dd0e6e68f5701d83334ef4e8cb0638f50c69841 SHA-256: ea3020eca4bd11713f84d8f196a0e45b096f1fadb744dd00bb5f22a5e3481d28
196 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
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://maypoin.ru/123?utm_term=foam+concrete+mix+design+calculator PDF link annotation
    • http://qupieasy.online/lilerifuvetekekzm2e9.pdfIn PDF document text
    • http://nuverlites.online/vusulesikamuaxh7c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382414/normal_5fe82b4c77bc2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448103/normal_5fcc249ad8849.pdfIn PDF document text
    • http://saxefitipar.iblogger.org/blossoms_of_savannah_guide_notes.pdfIn PDF document text
    • https://ditomivowulute.weebly.com/uploads/1/3/4/6/134679561/devemofovoxeb-lelipebu-gadog.pdfIn PDF document text
    • http://lovemecompletely.com/flip_surfing_colors_mod_apkmxeq5.pdfIn PDF document text
    • https://femodamokej.weebly.com/uploads/1/3/4/5/134529999/38a9d30651d489.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/voropa/47725796365.pdfIn PDF document text
    • http://roxonolabixatox.epizy.com/xisabas.pdfIn PDF document text
    • http://rulenanevatetid.epizy.com/aldi_talk_app_apk_chip.pdfIn PDF document text
    • https://s3.amazonaws.com/tubupejevomo/83225890304.pdfIn PDF document text
    • https://s3.amazonaws.com/puretulenuza/41227977089.pdfIn PDF document text
    • https://s3.amazonaws.com/sisaxu/apostila_administrao_pblica_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/lixisariwulo/30578492616.pdfIn 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_off0000cece.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCECE 5280 bytes
SHA-256: b077fda6038dea01265b38612a66c86addf89660aeeff42d9f4d9d4b4f3ff261
font_01_sfnt_off0000e0b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0B1 10768 bytes
SHA-256: 62c79a5a220b3c669cd1b56387150081c27bbffc48a762f84d9b4a843f04a398