Malicious PDF — malware analysis report

Static analysis result for SHA-256 886164d115d2893b…

MALICIOUS

PDF

68.3 KB Created: 2021-02-28 10:40:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: b6ef64d9826f8b4129b8aeb8d0c031c1 SHA-1: f69c7e06b51fed3755e3aeedf884d547c920a5b4 SHA-256: 886164d115d2893bab0c14f14ed3078edf15d9a38f4f76fc8a75a61c4b56402e
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://gimoguvi.ru/award?keyword=jawbone+up4+reset PDF link annotation
    • https://cdn.sqhk.co/pevejotomoma/9srhdUy/cheap_live_chickens_for_sale_near_me.pdfIn PDF document text
    • https://sufifova.weebly.com/uploads/1/3/4/7/134736026/8774633.pdfIn PDF document text
    • https://cdn.sqhk.co/gozigawefo/jydggjg/45128040503.pdfIn PDF document text
    • http://cccckkkkkdd.space/genie_model_2022_keypad_programming5wj8a.pdfIn PDF document text
    • http://vinnipoh.fun/racing_3d_gamesape6v.pdfIn PDF document text
    • http://rabota-plus.club/879034812179jejo.pdfIn PDF document text
    • https://cdn.sqhk.co/bogijifaviba/ggjerhd/wbtv_television_schedule.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/vuxirefare/gulak.pdfIn PDF document text
    • https://s3.amazonaws.com/zubuwujoxom/sukokewoviloduwiwas.pdfIn PDF document text
    • https://s3.amazonaws.com/mokamoba/what_is_calorie_deficit_meal_plan.pdfIn PDF document text
    • https://s3.amazonaws.com/bofake/betty_la_fea_2019_transformacion.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_off0000d06c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD06C 5088 bytes
SHA-256: fe4c8e8be67e2f60ec868b1eeca0a431c14e924fd616815c1f1be2a7513c011b
font_01_sfnt_off0000e1e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1E2 10272 bytes
SHA-256: 55650cf5d9affb8deb52c7614ab68b6ccde8845edab6205bf0d376f28b079998