Malicious PDF — malware analysis report

Static analysis result for SHA-256 d02e12e257bd15b1…

MALICIOUS

PDF

41.8 KB Created: 2020-10-30 09:40:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 91c69840d227807aca71fbc29f500d26 SHA-1: d436e743d2b9bae418033dd743491813873249f9 SHA-256: d02e12e257bd15b12c10a9891e8f0908a1378f852e55d65b5fe8a8392d1723e0
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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://cctraff.ru/aws?keyword=do+lizards+bite+and+are+they+poisonous In PDF document text
    • https://wekegakusujesal.weebly.com/uploads/1/3/4/2/134266445/fetupekuxiwiz.pdfIn PDF document text
    • https://kesevaze.weebly.com/uploads/1/3/1/3/131383297/zobevepuki-basugo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369797/normal_5f8d82167ca64.pdfIn PDF document text
    • https://ganulexotugoris.weebly.com/uploads/1/3/1/1/131164012/9872142.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406170/normal_5f9353b452f1f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383928/normal_5f90c8c93ca6f.pdfIn PDF document text
    • https://tanezogifa.weebly.com/uploads/1/3/4/3/134321065/758021aee.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4394071/normal_5f99c26ba3bd5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369786/normal_5f8a3d3203374.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/fowikorejodi/bajaj_auto_logo.pdfIn PDF document text
    • https://s3.amazonaws.com/mulerux/shadow_mountain_high_school_calendar.pdfIn PDF document text
    • https://s3.amazonaws.com/tabobujimo/gifuwivilirozu.pdfIn PDF document text
    • https://s3.amazonaws.com/dutimajizowa/binging_with_babish_cookbook.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/6633321745.pdfIn PDF document text
    • https://medlineplus.gov/poisoning.htmlIn 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_off00006622.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6622 5340 bytes
SHA-256: 25309b37807b56f34107c84a97404f6f4f2b10bd4ea0c23ac1921be12860bb00
font_01_sfnt_off0000784b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x784B 9960 bytes
SHA-256: 5c71b1a3bb5fb4c672ff3953d746c106efcb700e56eea1ffefa93644be647e2e