Malicious PDF — malware analysis report

Static analysis result for SHA-256 80eecf3bacc95d14…

MALICIOUS

PDF

67.8 KB Created: 2021-02-17 06:37:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 5f86a2db171c569c392ccd3fe3ea3713 SHA-1: 58b56f19712e1bc1fd725de55b63a8a3b51e284e SHA-256: 80eecf3bacc95d14ea6699db4c4d5d166fe65e83eafba0278844d77463a14a4a
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://seumenha.ru/wix?keyword=drawing+lewis+structures+practice+worksheet PDF link annotation
    • http://movoxazukum.22web.org/aldea_global_definicion.pdfIn PDF document text
    • https://sijotifibiga.weebly.com/uploads/1/3/0/9/130969940/vigizuvad.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451350/normal_5fe0350a29474.pdfIn PDF document text
    • https://sifirugosiwoxam.weebly.com/uploads/1/3/1/3/131384024/benexij_siwizu_milikumatidasud.pdfIn PDF document text
    • https://cdn.sqhk.co/jigitovewuk/ED7mwhj/44756326740.pdfIn PDF document text
    • https://vanazufir.weebly.com/uploads/1/3/2/7/132740694/8683223.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415742/normal_5fced44abfd44.pdfIn PDF document text
    • https://wekisakalew.weebly.com/uploads/1/3/4/6/134617168/9818396.pdfIn PDF document text
    • http://xalufabo.iblogger.org/59325621298.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/leteraxewe/nccn_gastric_cancer_guidelines_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/pibajuwi/21905378769.pdfIn PDF document text
    • http://nuluvikubidobo.epizy.com/3712360349.pdfIn PDF document text
    • https://s3.amazonaws.com/belopudevuzuza/android_one_screenshot_mi_a2.pdfIn PDF document text
    • https://s3.amazonaws.com/wokesabisevo/8282794109.pdfIn PDF document text
    • https://s3.amazonaws.com/tozaduliwubega/airline_ticketing_software_free.pdfIn PDF document text
    • https://s3.amazonaws.com/wulagisi/golowopo.pdfIn PDF document text
    • https://s3.amazonaws.com/niporofez/mailchimp_view_template_html.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_off0000cc39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC39 5352 bytes
SHA-256: 73a25e0ccc6c59419e9106f34571aff41d68fe9d2b26491d21c25c83a5499969
font_01_sfnt_off0000de84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE84 9928 bytes
SHA-256: af5d4e35756d100e2f9814fb62f7ca256774dd233933db1c2e69a3b5c33526b0