Malicious PDF — malware analysis report

Static analysis result for SHA-256 865a4152ff5ac552…

MALICIOUS

PDF

70.3 KB Created: 2020-11-13 01:10:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 764d15296d487109a0cfe6ec5a3cca6d SHA-1: d86414ba6c34fe0da69aba06bc0cdc7957523028 SHA-256: 865a4152ff5ac552789d80444da6711a1100ba1557664105c041cee43d5b5353
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 0.9997

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://traffking.ru/123?utm_term=clinton+school+for+writers+and+artists+ranking PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4409395/normal_5faaee040a062.pdfIn PDF document text
    • https://refanoripusegu.weebly.com/uploads/1/3/4/3/134306014/b73dadb6e493cc.pdfIn PDF document text
    • https://dudikojegak.weebly.com/uploads/1/3/1/4/131406444/jagabuwemewozavorir.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/efc05f39-ff84-40fb-96f6-250b48958ade/fifojarasazavumimen.pdfIn PDF document text
    • https://s3.amazonaws.com/muxozuvalubi/ap_interim_budget_2019-_20.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/76fce187-8059-4a27-a212-1712d6ae9d92/91074580468.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5c4c1440-5034-48aa-9403-009d420b8253/emilia_and_iago_scene_and_relationship.pdfIn PDF document text
    • https://s3.amazonaws.com/ragejufa/zuxosujepotamexufajo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cccdcf1d-ba13-4c3c-8858-7fb62f057780/wotasakularibirodiruka.pdfIn PDF document text
    • https://s3.amazonaws.com/zebarufuridorur/59825842681.pdfIn PDF document text
    • https://s3.amazonaws.com/zategafozasiru/frozen_movie_putlockers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ad83b289-93e6-46b5-8dde-c86d7c50ccd5/manual_de_uma_patricinha.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 1

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c729.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC729 5248 bytes
SHA-256: 343eae7f5b13eeb964129f061b9e14777accfcb42c3eb62c31c0bd4058c84151
font_01_sfnt_off0000d90b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD90B 10988 bytes
SHA-256: 87a13974aa2d6c14f3c10f32b4ab12a7159f98dfc9531e9e26c75a1b6e14744e
font_02_sfnt_off0000fe22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE22 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

Open this report in the interactive analyzer, or submit your own file for analysis.