Malicious PDF — malware analysis report

Static analysis result for SHA-256 34bb80a7f02d365a…

MALICIOUS

PDF

61.3 KB Created: 2020-11-11 00:44:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 8a5a62afc9c32c68d2ee17fb3fcb4105 SHA-1: 2d616cd142c1679440545a1f7b7aea0944b3a6ea SHA-256: 34bb80a7f02d365ad82e4b12fdd9a221ad2b49c4355377faae0e941cde32f63f
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • 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.
  • 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://trafffe.ru/123?keyword=ping+s+mhxx+dex PDF link annotation
    • https://jalewigevat.weebly.com/uploads/1/3/2/6/132681207/xazovaxawola_jusida_kafijogo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366319/normal_5fa7adf76a4c9.pdfIn PDF document text
    • https://duvonejubuzal.weebly.com/uploads/1/3/4/3/134321315/mekife.pdfIn PDF document text
    • https://fumunagik.weebly.com/uploads/1/3/4/5/134520136/pogovopes-juzadadig-tiwoz-xutalarapi.pdfIn PDF document text
    • https://dujolisinapujis.weebly.com/uploads/1/3/4/3/134328324/b60f58c9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450635/normal_5fa1f19e0d8d0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/571cf76b-539d-46ec-a58b-3729af49110c/88238708619.pdfIn PDF document text
    • https://s3.amazonaws.com/xalasawu/55052623413.pdfIn PDF document text
    • https://s3.amazonaws.com/zoromexemuzid/56496313572.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/62801303859.pdfIn PDF document text
    • https://s3.amazonaws.com/wulagisi/dosozatozoso.pdfIn PDF document text
    • https://s3.amazonaws.com/soxukowotomaj/bifoxinegarapudegezaf.pdfIn PDF document text
    • https://s3.amazonaws.com/robumuduluwise/vaccines_and_autoimmunity_book.pdfIn PDF document text
    • https://s3.amazonaws.com/rebesudanolo/jumbling_in_hindi.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b2ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB2EE 4972 bytes
SHA-256: 7899b75147798ec5d3d139af4f8c3f85eecb35f296c6c18295348f135336c865
font_01_sfnt_off0000c3be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC3BE 11256 bytes
SHA-256: 3c9b454df087817181d951ee82ef7eab29669139c200c88d6704b3df0f76e606

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