Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd708700dfd06e1a…

MALICIOUS

PDF

74.1 KB Created: 2021-02-27 16:40:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 4e3fb6313b4f6d318a1f3725ab1fba5f SHA-1: ff7fa1d8ed19db404ba864ed1c79502acbab10cc SHA-256: bd708700dfd06e1a1df09928134c2e8e48e7e14a9e37fe062e1a2881bb161b78
256 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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.
  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://wabezapodila.weebly.com/uploads/1/3/1/4/131437306/sakovibexuxegojak.pdf.
  • 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://xajibur.ru/wix?keyword=reset+ipod+shuffle+1st+generation PDF link annotation
    • https://wabezapodila.weebly.com/uploads/1/3/1/4/131437306/sakovibexuxegojak.pdfIn PDF document text
    • http://antinomi.design/coda_meetings_near_me_ukd7x3c.pdfIn PDF document text
    • http://velavedi.iblogger.org/defined_benefit_guide_qsuper.pdfIn PDF document text
    • http://zunuruxeguxifi.mygamesonline.org/17931593151.pdfIn PDF document text
    • http://snegny.com/aja_ki_pro_ultraywd57.pdfIn PDF document text
    • http://zoluwofemofuper.sportsontheweb.net/dedawulutakelipini.pdfIn PDF document text
    • https://voresefum.weebly.com/uploads/1/3/0/8/130813922/vikodegikel.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/feseni/40918794931.pdfIn PDF document text
    • https://s3.amazonaws.com/bezutu/19952191301.pdfIn PDF document text
    • http://nowakimelufumi.epizy.com/inkscape_apk_download_for_android.pdfIn PDF document text
    • http://zuvuzevo.atwebpages.com/sunbeam_oskar_food_processor_instructions.pdfIn PDF document text
    • https://s3.amazonaws.com/zewimu/77811695310.pdfIn PDF document text
    • https://s3.amazonaws.com/belapawerezuju/jixokabuteb.pdfIn PDF document text
    • http://lumosaneja.onlinewebshop.net/washington_state_phase_2_construction_requirements.pdfIn PDF document text
    • https://s3.amazonaws.com/bejikefowu/wimozabisa.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_off0000e4e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4E5 5364 bytes
SHA-256: 64f2b508245a264fbc85707af9e1ef966bee05c385d88f7f98fbf6878c38b543
font_01_sfnt_off0000f727.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF727 10672 bytes
SHA-256: c28b40006c362edf515fab33d43c3e44da83db251894232abc5785980d318937