Malicious PDF — malware analysis report

Static analysis result for SHA-256 036d817d6b9b3251…

MALICIOUS

PDF

76.6 KB Created: 2021-03-03 18:44:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: a1e38c3017427127f571173f22a2e2a5 SHA-1: b086ce29ae3a35f6d31d1c06c317b1d9b84ddebc SHA-256: 036d817d6b9b32513b9ea6ee04249a8bb5bac3bc751dca0327789328efbedb0b
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://midufefew.ru/123?utm_term=where+to+buy+schar+gluten+free+products PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4378853/normal_5fef024a50c93.pdfIn PDF document text
    • https://dodukitomot.weebly.com/uploads/1/3/1/4/131407143/foragoji_volavedu.pdfIn PDF document text
    • http://delavivajew.22web.org/chew_on_this_book.pdfIn PDF document text
    • https://nipujari.weebly.com/uploads/1/3/1/3/131384055/1676941.pdfIn PDF document text
    • https://radifepibonavu.weebly.com/uploads/1/3/2/7/132712096/c2543.pdfIn PDF document text
    • https://kasababafaraw.weebly.com/uploads/1/3/5/3/135336348/3077af878416de5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448124/normal_602cf4a9d2862.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/vavale/36680735320.pdfIn PDF document text
    • http://fifozeripomok.rf.gd/left_out_synonym_slang.pdfIn PDF document text
    • http://dogirajuwuxo.epizy.com/rangos_de_movilidad_articular_goniometria.pdfIn PDF document text
    • https://s3.amazonaws.com/tenunud/integrated_microelectronics_inc_annual_report.pdfIn PDF document text
    • https://s3.amazonaws.com/vibasujefir/78995254103.pdfIn PDF document text
    • https://s3.amazonaws.com/pavujiniz/14891011568.pdfIn PDF document text
    • http://tosopipates.epizy.com/zigoxazedovilitasiked.pdfIn PDF document text
    • https://s3.amazonaws.com/ruzaganog/colorlib_free_dashboard_templates.pdfIn PDF document text
    • https://s3.amazonaws.com/tazopaju/webibugogomazuziliva.pdfIn PDF document text
    • http://vuruwabudakase.epizy.com/zomog.pdfIn PDF document text
    • http://tezezufiru.rf.gd/how_to_turn_on_garmin_edge_510.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_off0000eb83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB83 5672 bytes
SHA-256: 0f0c9122d811ca5d6366b529bbd7c5b1fb316890fea9f2557a5fe28e175a40c8
font_01_sfnt_off0000fee4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFEE4 11416 bytes
SHA-256: b9f4614b93542c83015afc3d21f9e128ebd9ac9076656047ef1373c4f5bca514