Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd00ffe34015662e…

MALICIOUS

PDF

66.0 KB Created: 2020-11-22 04:43:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 274fece094a05197e969988286c0d488 SHA-1: 2201140ee2625745fda4bd01312b6a4b25c375fb SHA-256: cd00ffe34015662e02c0f52b2c649fec6f36ce751ae31f77bb8ef1eb203034ac
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 0.9998

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://traffset.ru/aws?utm_term=amma+premalona+audio+song+free PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4419003/normal_5fb49da2d5d67.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369908/normal_5f8bf46d85043.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417526/normal_5f9a9978d50b0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404953/normal_5f95977d9dc63.pdfIn PDF document text
    • https://badipixurer.weebly.com/uploads/1/3/4/4/134456466/zapunegokufisanibil.pdfIn PDF document text
    • https://luwinititik.weebly.com/uploads/1/3/4/5/134587042/mefowegozi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374521/normal_5f89fdad3bb03.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491673/normal_5fad9e2b38afc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369643/normal_5fb48c9aba8e3.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/b6cbb608-4afd-454f-a837-05abed241af6/world_conqueror_3_apk_ios.pdfIn PDF document text
    • https://s3.amazonaws.com/tesodagiwor/circle_the_subject_in_each_sentence.pdfIn PDF document text
    • https://s3.amazonaws.com/xazarujokemus/pexigibasozajo.pdfIn PDF document text
    • https://s3.amazonaws.com/salade/taco_bell_nutritional_information.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/55dad743-84d7-4b57-93f2-da0a0064c368/patumunipa.pdfIn PDF document text
    • https://s3.amazonaws.com/degagaziv/ap_government_and_politics_2019_study_guide.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_off0000bbe3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBBE3 5348 bytes
SHA-256: 4e319e995a314440b7a3025375e9d1e0bdb575582c9b0820892669c6f8f63ffb
font_01_sfnt_off0000cdf9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDF9 14428 bytes
SHA-256: 572b461f6af121c2bdf1a06a1c91400bd0c72c31f17e893108d9064bfdff9740

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