Malicious PDF — malware analysis report

Static analysis result for SHA-256 27505f2f2ee2a5ef…

MALICIOUS

PDF

68.4 KB Created: 2021-02-23 09:37:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: ebadeedd1bb5c13d839696df529e3cab SHA-1: c1ae2ad5e7c897a939d362bf73bd1a46d4e9668e SHA-256: 27505f2f2ee2a5ef38829ecec035e11bae87457a31d7b2c1e7710bf1b3ee69cc
186 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://maypoin.ru/wix?keyword=seedfolks+chapter+questions+and+answers PDF link annotation
    • https://pagiburefi.weebly.com/uploads/1/3/4/1/134108706/5246497.pdfIn PDF document text
    • https://kedefakoriwo.weebly.com/uploads/1/3/1/1/131164231/11664f8bbd.pdfIn PDF document text
    • http://amorexpo.com/naruto_shippuden_ultimate_ninja_impact_android_apk4k349.pdfIn PDF document text
    • https://nawuwisenaz.weebly.com/uploads/1/3/5/3/135318134/6746660.pdfIn PDF document text
    • https://kosilamegorigi.weebly.com/uploads/1/3/1/4/131409210/minonidigemapubesol.pdfIn PDF document text
    • https://miwevedadig.weebly.com/uploads/1/3/1/4/131437981/d9386bdc6c4c93.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485305/normal_5ff33940c8447.pdfIn PDF document text
    • http://cmbclientes.com/badinifuludupowi1iq0l.pdfIn PDF document text
    • https://tusilagel.weebly.com/uploads/1/3/0/7/130739454/db6e117fade2.pdfIn PDF document text
    • https://pidujalibogi.weebly.com/uploads/1/3/1/3/131380128/9044119.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414688/normal_602f413472ca9.pdfIn PDF document text
    • https://fokifukamanur.weebly.com/uploads/1/3/0/8/130874497/bfa29d4cbab.pdfIn PDF document text
    • http://creditchecktotal.info/why_is_my_samsung_screen_mirroring_not_working8jyk9.pdfIn PDF document text
    • https://tatunonomufobuf.weebly.com/uploads/1/3/4/3/134355176/vegogekabo.pdfIn PDF document text
    • https://bijivabaj.weebly.com/uploads/1/3/4/6/134601785/wijili.pdfIn PDF document text
    • https://sobasoje.weebly.com/uploads/1/3/2/6/132695832/fokev.pdfIn PDF document text
    • http://sdorovie-sustavi.xyz/55209545770qin4a.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/mogedozara/big_ideas_learning_answer_key.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_off0000cf9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF9B 5628 bytes
SHA-256: 5b087578bf5cd9a0ec8700285af22b125467ffce4602e0bb998f85d1b319ac8d
font_01_sfnt_off0000e2d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2D5 9796 bytes
SHA-256: 09812fcf7d2e5ee0578f571577a95fa038404bf9ab6ce761d2db901a0931e3db

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