Malicious PDF — malware analysis report

Static analysis result for SHA-256 a85d14e69b43664b…

MALICIOUS

PDF

45.4 KB Created: 2020-11-07 23:34:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-11
MD5: ec7dcd09d0a6d54b4e512ee58440e95f SHA-1: d05bdd79ceb15ce8e21d4afa4e7761e01a42a08c SHA-256: a85d14e69b43664be7c4a89efa554d9881111a75b9a0c6d4907f90629c7659d8
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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://trafficel.ru/123?keyword=park+kyung+block+b+plastic+surgery PDF link annotation
    • https://gepagalegizexu.weebly.com/uploads/1/3/4/4/134478943/xitumeminada.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404745/normal_5fa169090d609.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446915/normal_5f9f9c31618ac.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426409/normal_5fa2229c9f877.pdfIn PDF document text
    • https://walijogopabo.weebly.com/uploads/1/3/0/7/130776167/wubami-pikijetosili-lebopoba.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/rubidokezive/chapin_intermediate_school_supply_list.pdfIn PDF document text
    • https://s3.amazonaws.com/dujepav/all_in_one_periodic_table.pdfIn PDF document text
    • https://s3.amazonaws.com/tesotiwapax/15472224736.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/nigefem.pdfIn PDF document text
    • https://s3.amazonaws.com/domegagowevag/cream_shiba_inu_puppy.pdfIn PDF document text
    • https://konomalipu.files.wordpress.com/2020/11/vupezidomobifowawatanug.pdfIn PDF document text
    • https://s3.amazonaws.com/gotenukevepunin/81843249447.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000063ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63ED 3148 bytes
SHA-256: 8c1686d6eed3abca85dc8d0cc16ebebe68da72284811ea3867da0014f69c4d6f
font_01_sfnt_off00006f3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F3C 5408 bytes
SHA-256: bd1f2027ebbe6763e0a4bff5f79a12c1fe877bae45b669616cb1e85f09bdd655
font_02_sfnt_off000081bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81BF 11360 bytes
SHA-256: 652139b214775c2a0b708034637c99354d899453068b82ff1c3ec98aeaf0ed01

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