Malicious PDF — malware analysis report

Static analysis result for SHA-256 3085bebbd7125a4b…

MALICIOUS

PDF

69.3 KB Created: 2021-03-07 16:58:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 4bf6bde9c0e3abba4335d555f4932ff0 SHA-1: 74d857190bfbd8cce454180ee081440af188ba70 SHA-256: 3085bebbd7125a4beef0b513de9bb8881e2be95dd1f207127bbb4a5575691cd4
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://fokemale.ru/wix?keyword=electromagnetic+fields+and+waves+iskander+pdf PDF link annotation
    • https://tivepikilusu.weebly.com/uploads/1/3/4/7/134759048/c8729629e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472788/normal_600b90d8c47fb.pdfIn PDF document text
    • http://leledup.mypressonline.com/tajep.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387037/normal_6007c993f3c50.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465250/normal_5fda5f5f18c6e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496607/normal_5fe2c9080cb80.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365525/normal_6003089d2cb24.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392666/normal_60384f20d0cfd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489587/normal_6008bd58067ab.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4462985/normal_5fe414c59dfb0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411916/normal_600a928426db4.pdfIn PDF document text
    • https://deremorukoj.weebly.com/uploads/1/3/4/4/134490203/6acbd2de75b.pdfIn PDF document text
    • https://fefodenajefive.weebly.com/uploads/1/3/1/4/131437461/bejifufirum_vopixuvileneg_juguwofewiraf_fixalo.pdfIn PDF document text
    • http://fuwiduwoxobol.mygamesonline.org/el_guardian_entre_el_centeno_capitulo_11.pdfIn PDF document text
    • https://faxilazow.weebly.com/uploads/1/3/4/7/134725206/7262d.pdfIn PDF document text
    • http://nemagufi.mywebcommunity.org/bebobesezowezubafovaju.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dezobod.onlinewebshop.net/is_so3gh2ol-_h2so4aq_a_redox_reaction.pdfIn PDF document text
    • http://koxowideza.epizy.com/pijefigovitebinikekoje.pdfIn PDF document text
    • https://s3.amazonaws.com/lejivugeleguwod/avatar_2_the_way_of_water.pdfIn PDF document text
    • http://mafefelanepule.epizy.com/xoxijaxis.pdfIn PDF document text
    • https://s3.amazonaws.com/dugibabafod/ccs_university_exam_form_for_bba.pdfIn PDF document text
    • https://s3.amazonaws.com/jeromopelurab/povaxifonuxorazibado.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_off0000d22c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD22C 5648 bytes
SHA-256: ed1cd1e44f7a03f5879229fc05a9b142a8add84ec219e33165dcee169365964e
font_01_sfnt_off0000e572.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE572 9940 bytes
SHA-256: a408a29c1049349b3729e03aba2d0cae6087794332739b9fe0940cec7f69709e