Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0b1b916a53a6e80…

MALICIOUS

PDF

68.1 KB Created: 2021-02-28 03:39:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 103e9f2e3b4d9542d73e65604bf675d8 SHA-1: 99038c7b35244337e9c4ea5ba82e54e3f8ae3fcb SHA-256: e0b1b916a53a6e80f86c1e450b648e74b6573c30bda8e42ef4ace6d040928413
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://gimoguvi.ru/wix?keyword=foley%2527s+family+market+circular PDF link annotation
    • http://lemixop.iblogger.org/jifuwon.pdfIn PDF document text
    • https://jaxuguduju.weebly.com/uploads/1/3/4/4/134442137/369384.pdfIn PDF document text
    • https://xilizotuxepaxi.weebly.com/uploads/1/3/4/3/134309236/c1a2fcbe871.pdfIn PDF document text
    • https://jovawovifo.weebly.com/uploads/1/3/4/8/134883275/6266387.pdfIn PDF document text
    • http://nevozepamuj.iblogger.org/how_to_get_certified_as_a_medical_assistant_in_florida.pdfIn PDF document text
    • https://nezuwiwobitedut.weebly.com/uploads/1/3/4/6/134600585/855957a9de06.pdfIn PDF document text
    • https://tipirigemiwar.weebly.com/uploads/1/3/4/0/134016889/9949086.pdfIn PDF document text
    • https://lifexego.weebly.com/uploads/1/3/0/8/130874678/newol.pdfIn PDF document text
    • https://pivokobofu.weebly.com/uploads/1/3/4/6/134648089/3611572.pdfIn PDF document text
    • https://doxifivot.weebly.com/uploads/1/3/4/2/134235468/feb5699a2d5.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/vebenok/indonesian_language_application_for_android.pdfIn PDF document text
    • https://s3.amazonaws.com/wamatasamegu/77850543192.pdfIn PDF document text
    • http://kadoxosin.atwebpages.com/sarah_dessen_someone_like_you_read_online.pdfIn PDF document text
    • https://s3.amazonaws.com/tesapibebujep/850380803.pdfIn PDF document text
    • https://s3.amazonaws.com/wupuxus/panasonic_telephone_manual_dect_6.0_plus.pdfIn PDF document text
    • https://s3.amazonaws.com/tejuvonixag/24327353259.pdfIn PDF document text
    • https://s3.amazonaws.com/kavugusepe/a4_graph_paper_template.pdfIn PDF document text
    • http://nejarisiwudu.atwebpages.com/which_bank_is_best_for_international_students.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_off0000cf1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF1C 5184 bytes
SHA-256: 7bc0488f5b809c35e840effc1419607dd5687b9634f7aed48ca232e90eecd30f
font_01_sfnt_off0000e0bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0BF 10212 bytes
SHA-256: c05889f6935973c37703637d1b47ed80f24d706123553cfdcf658ac48c9edcfc