Malicious PDF — malware analysis report

Static analysis result for SHA-256 788cd536976b9bd5…

MALICIOUS

PDF

68.5 KB Created: 2021-02-05 17:46:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 4700163e01d89c7d23dc97f194f26591 SHA-1: f835abb7e3a2bb04dfc93a0abfd0975025665f74 SHA-256: 788cd536976b9bd5b77865e0c3e31555726d8790e0556ef23e09d0ffcdeb1f2a
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://seumenha.ru/aws?utm_term=conversion+of+pdf+file+into+excel+sheet PDF link annotation
    • http://sizegivip.22web.org/multiplying_dividing_integers_worksheets_7th_grade.pdfIn PDF document text
    • http://simultaneously.space/89276669161r1zrt.pdfIn PDF document text
    • http://juzajikadig.22web.org/towutemagejowinu.pdfIn PDF document text
    • http://hh666o.site/odd_eyes_pendulum_dragon_limited_editionjjdrd.pdfIn PDF document text
    • http://neojust.ru/fizovobumuses8uce.pdfIn PDF document text
    • http://55571.ru/perceiving_the_arts_11th_edition8jdtj.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/gumagabu/sojofudasenarigivabufixe.pdfIn PDF document text
    • http://diwulabasiluxe.epizy.com/xexisidevuniwadit.pdfIn PDF document text
    • https://s3.amazonaws.com/nagev/21414572825.pdfIn PDF document text
    • https://s3.amazonaws.com/sabegokek/70519311776.pdfIn PDF document text
    • https://s3.amazonaws.com/pegek/55764335742.pdfIn PDF document text
    • http://giduzorim.epizy.com/23629659564.pdfIn PDF document text
    • http://tonataf.epizy.com/android_collapsing_toolbar_shadow.pdfIn PDF document text
    • https://s3.amazonaws.com/nevowimo/receipt_format_for_travel_agency.pdfIn PDF document text
    • https://s3.amazonaws.com/tedowafomaru/wpf_hierarchicaldatatemplate_selected_item.pdfIn PDF document text
    • https://s3.amazonaws.com/dabatisew/75565645561.pdfIn PDF document text
    • http://xubobesirubujo.rf.gd/wilibumewomunofurinux.pdfIn PDF document text
    • http://fizifar.epizy.com/linel.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_off0000d04e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD04E 5064 bytes
SHA-256: 281f1dfb1fc01c570945af29e806e89d27683ddfe0b6ab5868f4cdc27f6f6faa
font_01_sfnt_off0000e190.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE190 10268 bytes
SHA-256: eeb2f3ea69edfe05ee3f72282310794c14a3beddb816ec02a5f14449f4dd41d9