Malicious PDF — malware analysis report

Static analysis result for SHA-256 86293767c02af17d…

MALICIOUS

PDF

72.4 KB Created: 2021-02-13 07:10:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 074bc5ebacc11e38f7f95fce64a4ff2d SHA-1: 7dc0cd7dd10a65932da5dfc55882a3d6b013dcb6 SHA-256: 86293767c02af17dfc3240c161a6feb69a5477f83006ea16a37f14e2ec34f036
254 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/wix?keyword=linear+model+word+problems+worksheet In PDF document text
    • https://weranatowo.weebly.com/uploads/1/3/1/4/131408071/befae7b6a0363.pdfIn PDF document text
    • https://merogowaxoku.weebly.com/uploads/1/3/1/0/131069891/gafuzogopi-lisozisivobizi-foredu-fudisisiganavuf.pdfIn PDF document text
    • https://cdn.sqhk.co/noxibogalu/jbsxhcV/tuzuvejaxomenawidovuju.pdfIn PDF document text
    • https://cdn.sqhk.co/tikikizeveni/Ahdifj3/defense_zone_2_hd_lite_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/defisepeniba/QPyCgdC/pepper_tree_plaza_italian_restaurant.pdfIn PDF document text
    • https://cdn.sqhk.co/laripikiwafo/ijgdhfF/ruzagekotimiba.pdfIn PDF document text
    • https://polisurev.weebly.com/uploads/1/3/0/7/130740145/gokerubejolelotizit.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/jijari/3492698100.pdfIn PDF document text
    • https://s3.amazonaws.com/nefagolom/ginaxufigub.pdfIn PDF document text
    • https://s3.amazonaws.com/tisegovofu/gupizesusup.pdfIn PDF document text
    • https://s3.amazonaws.com/gotenukevepunin/nukapanowetulifowub.pdfIn PDF document text
    • https://s3.amazonaws.com/fidefofudi/gubewin.pdfIn PDF document text
    • https://s3.amazonaws.com/xetasif/adobe_acrobat_7._0_standard_full_version.pdfIn PDF document text
    • http://jasigobup.epizy.com/ejemplos_de_catabolismo_y_anabolismo.pdfIn PDF document text
    • https://s3.amazonaws.com/wesezuzuvalirik/unit_conversion_physics_questions_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/rawesaragegugar/aaa_logo_full_version_gratis.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_off0000def7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEF7 5436 bytes
SHA-256: c3de60020c2d16e0b0cc3bdc84ac8c4b12825e010c17c74a5eca753223a4f566
font_01_sfnt_off0000f154.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF154 10320 bytes
SHA-256: 7fe442237140841ebe4981e74e08acde661418168fd20d0ab8134d8eccf0904b

Open this report in the interactive analyzer, or submit your own file for analysis.