Malicious PDF — malware analysis report

Static analysis result for SHA-256 04f1f70a29ba8cb5…

MALICIOUS

PDF

70.2 KB Created: 2021-03-06 10:55:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 4fb21872d4c441f2d9d76eedbee664d2 SHA-1: 58ed96ead2a33c8dc074196b06833f0411132f44 SHA-256: 04f1f70a29ba8cb5b828346c6ac13348cc239303e286a0f9fa61ad49784adea5
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/award?keyword=why+does+my+atomic+clock+not+work PDF link annotation
    • https://gimelasu.weebly.com/uploads/1/3/4/5/134513778/sipegemugawerixud.pdfIn PDF document text
    • http://duwinijuj.mypressonline.com/evicted_matthew_desmond_chapter_summaries.pdfIn PDF document text
    • https://ziwevanefenej.weebly.com/uploads/1/3/4/5/134591483/xametu_sijok_girivulire.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388835/normal_5fd840f26c63b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408721/normal_602448f9cad75.pdfIn PDF document text
    • http://fakaripeti.xyz/porque_las_bases_nitrogenadas_del_adn_son_complementariaspp6p7.pdfIn PDF document text
    • http://zivemigidefis.mypressonline.com/how_to_read_garmin_echomap_sv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495694/normal_603aabd067eb6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393016/normal_5ffea78377890.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367925/normal_5ff7e20d376ec.pdfIn PDF document text
    • http://shopwithsale.website/92627714766ro199.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471688/normal_5fecc968d3335.pdfIn PDF document text
    • https://xajimago.weebly.com/uploads/1/3/0/8/130813364/191923.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489717/normal_6042f5986fc1c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366033/normal_5fee53140af2f.pdfIn PDF document text
    • https://nezasitize.weebly.com/uploads/1/3/5/3/135303973/db1f7d2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417526/normal_5ffc952c4c37e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469634/normal_5fc8c0aa279f8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nekaxikafixof.epizy.com/visual_basic_tutorial_for_beginners_with_examples.pdfIn PDF document text
    • http://wizebefekeb.epizy.com/facebook_facebook_mobile_free.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_off0000d642.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD642 5448 bytes
SHA-256: 1b953034d34dc8159778e4c64661435d420475da9150ffef159bb02b4a4f5147
font_01_sfnt_off0000e8c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8C0 10184 bytes
SHA-256: 0f0a3d738f231c45506a105746e5479e302a6e0a859e4fb51536cca35e01c73b