Malicious PDF — malware analysis report

Static analysis result for SHA-256 7065a3ceaf2cf5d3…

MALICIOUS

PDF

71.5 KB Created: 2021-02-09 12:06:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 1101f4624d70b98b99d90eab72318323 SHA-1: 42c8c9c46c6d21bbeeeb6821a5364f233ffc138f SHA-256: 7065a3ceaf2cf5d30d11ef0833abcd5a97f154d2eecf6d7929fdf3422ff05995
254 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/wb?keyword=altera%20cyclone%20v%20fpga%20datasheet In PDF document text
    • https://vigekajabaka.weebly.com/uploads/1/3/4/7/134708837/4089871.pdfIn PDF document text
    • http://ketosimple.online/shankar_bhagwan_ke_gana8aksp.pdfIn PDF document text
    • http://ewwe.space/vaikom_muhammad_basheer_novelsrv545.pdfIn PDF document text
    • https://cdn.sqhk.co/wemowubire/jcCjbgf/junior_project_manager_jobs_near_me.pdfIn PDF document text
    • http://greenbike.shop/dumatuzafopjj5pl.pdfIn PDF document text
    • https://mefutugotipefij.weebly.com/uploads/1/3/5/3/135304762/9e77ad384e187a.pdfIn PDF document text
    • http://filemarker.store/giuseppe_ungaretti_mattinamdbug.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/gujutavevive/black_fluted_plastic_sheets.pdfIn PDF document text
    • http://fezivepe.rf.gd/basketball_net_swish_sound_effect_free.pdfIn PDF document text
    • https://s3.amazonaws.com/babetafaperaxov/wudevaririrojivi.pdfIn PDF document text
    • https://s3.amazonaws.com/jonora/bineke.pdfIn PDF document text
    • http://dotixoxikal.rf.gd/70263940851.pdfIn PDF document text
    • https://s3.amazonaws.com/gajakelegeza/candy_crush_friends_app.pdfIn PDF document text
    • http://ruzoguniwu.epizy.com/17669538306.pdfIn PDF document text
    • http://vodupuginotipir.rf.gd/12584928781.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_off0000d5a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5A7 5568 bytes
SHA-256: 1b462590c0260cd0749a043e45ef5ba6fd4f62e2575b935499faa0fb39d13c14
font_01_sfnt_off0000e8a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8A0 11372 bytes
SHA-256: f009de758d408250764e19b426b60cd36f9245d33cf574be25a82dfd4a696453