Malicious PDF — malware analysis report

Static analysis result for SHA-256 b78e2630857846e0…

MALICIOUS

PDF

64.2 KB Created: 2021-02-27 09:12:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 11cc6b322de124de5124149c8ca96fe9 SHA-1: ea04388bd78c2afa042fa6a1d1c9a40240b86656 SHA-256: b78e2630857846e0beb9c002d2415646b69fa42880024996b01d3e49e120f66d
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://golowaki.ru/wix?keyword=midtown+eye+care+omaha PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4478664/normal_6036fb8e635b1.pdfIn PDF document text
    • https://migabodunezo.weebly.com/uploads/1/3/4/5/134587819/a72baa67696edf2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495860/normal_60043e8aa6361.pdfIn PDF document text
    • https://ranixujofenak.weebly.com/uploads/1/3/4/0/134016935/kogedesaze.pdfIn PDF document text
    • https://talunijepi.weebly.com/uploads/1/3/4/5/134599753/vidawazetuzetimat.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420599/normal_6026ec6d7ad67.pdfIn PDF document text
    • https://sutogibigasoju.weebly.com/uploads/1/3/1/0/131070189/julozidojegeka_favez_pewoxonirol.pdfIn PDF document text
    • https://cdn.sqhk.co/remezebona/gchaiiw/28180860421.pdfIn PDF document text
    • https://cdn.sqhk.co/vifutetax/kEidjgN/85801345040.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4443815/normal_5fc8d70e9c1d1.pdfIn PDF document text
    • https://cdn.sqhk.co/retakabif/WicDNjh/didabitom.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/kovozenamofox/womens_clothes_size_guide_uk.pdfIn PDF document text
    • http://datatoxozapi.epizy.com/what_hunting_season_is_it_in_vermont.pdfIn PDF document text
    • http://judotopefov.rf.gd/burazaneridokak.pdfIn PDF document text
    • https://s3.amazonaws.com/xulepiwa/lubixalaso.pdfIn PDF document text
    • https://s3.amazonaws.com/lawakux/que_es_la_epistemologia.pdfIn PDF document text
    • https://s3.amazonaws.com/dosalapasenow/41847296738.pdfIn PDF document text
    • http://zokivobadid.rf.gd/problem_statement_for_library_management_system.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_off0000c068.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC068 5168 bytes
SHA-256: 3b2d67e8e8bf68c40dee24ca121f788d56b66957107106c3ed57b28104891cf0
font_01_sfnt_off0000d1f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1F1 9920 bytes
SHA-256: f1838c2189399a944f774fbb3f924c54790e306dc05b4b644bd4930d792574c4