Malicious PDF — malware analysis report

Static analysis result for SHA-256 0887a2542e79dd5b…

MALICIOUS

PDF

66.3 KB Created: 2021-02-19 00:24:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: bf88525e9a25f9be1afa1fb78faf2459 SHA-1: 2f8e5709221a6df9fc0f0bc746fe67c022a5ff9c SHA-256: 0887a2542e79dd5beb9255dc52a6a3d6181ce1ea8378e54964189030d5dd1054
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jottigo.ru/wix?keyword=soundtrack+from+rush+hour+3 PDF link annotation
    • https://kofivenemiwelew.weebly.com/uploads/1/3/1/3/131380814/vokebakugajifejare.pdfIn PDF document text
    • http://muvubaziforobe.iblogger.org/shawn_mendes_and_camila_cabello_vma_perform.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369499/normal_5fc9a5ca01650.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4463306/normal_5fe3840d86717.pdfIn PDF document text
    • http://tevuvisena.iblogger.org/novatobuna.pdfIn PDF document text
    • https://cdn.sqhk.co/wakivugex/hjAtTgj/how_to_use_weapon_mastery_tokens_doom_eternal.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416923/normal_5feb26aea27a5.pdfIn PDF document text
    • https://rafopovuweke.weebly.com/uploads/1/3/2/7/132740485/1491106.pdfIn PDF document text
    • https://nokogijesa.weebly.com/uploads/1/3/1/4/131452879/1798809.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474722/normal_5ffd63b805b41.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4502178/normal_5fd09bcb76895.pdfIn PDF document text
    • https://wipusometava.weebly.com/uploads/1/3/4/8/134846349/todipefeluwejeje.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://musovinudebepak.epizy.com/tiwemexokedux.pdfIn PDF document text
    • http://pefodajisotavuk.rf.gd/duxafen.pdfIn PDF document text
    • http://fikirifulok.epizy.com/event_critical_path_template.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_off0000c77c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC77C 5560 bytes
SHA-256: 1ea8c3c2480b94b7758699d6c0ec8c80d282e811c048d9b810966e22f3185054
font_01_sfnt_off0000da40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA40 9968 bytes
SHA-256: 3bc45ae742bbb140cae1d18a2fcceaba1bb8c23f010ad7ce6cdf6fe4c57361ca