Malicious PDF — malware analysis report

Static analysis result for SHA-256 d47a84150bc961d1…

MALICIOUS

PDF

71.2 KB Created: 2020-12-16 11:57:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 27a7a9ad74d2eff9cd46a5957f8fa1c2 SHA-1: 91b87b36590f1f3b556b4bb6c1d922896c9e6a92 SHA-256: d47a84150bc961d1937726489754cc3d844cbb1a7f946caa649791bc464cfca2
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous external links, with a critical heuristic identifying it as a link farm. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically phishing. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to potentially malicious content hosted on external sites.

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://trafftec.ru/123?utm_term=rae+dunn+plates+canada PDF link annotation
    • https://gazezujebek.weebly.com/uploads/1/3/4/8/134881616/3828b9755.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366965/normal_5f926877e815d.pdfIn PDF document text
    • https://kafubururi.weebly.com/uploads/1/3/4/2/134235359/4987866.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/fosagobomap/form_199a_worksheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ac21adf4-3171-4f69-a01e-e93b6de8f680/zikonewigoxulepuleluvibi.pdfIn PDF document text
    • https://s3.amazonaws.com/votawawo/pitbull_beagle_mix_dog.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc28802bda9c57a97c88755/t/5fcbf12f5177ea328cab35db/1607201071399/star_wars_galaxy_of_heroes_hack_unlimited_crystals.pdfIn PDF document text
    • https://s3.amazonaws.com/tonisefoteka/24295943009.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0b3f1d49dd12447331c2b/t/5fc146379b1ed035380ac070/1606501943816/chick-fil-a_first_100_reddit.pdfIn PDF document text
    • https://s3.amazonaws.com/panalipolifod/the_urbz_sims_in_the_city_ps2_iso.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ff458839-e654-44ef-96e0-eebdaa90af8a/wovitafeviw.pdfIn PDF document text
    • https://s3.amazonaws.com/jadudusujuje/molecular_bonding_practice_worksheet.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d118.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD118 4980 bytes
SHA-256: 52b86d113874d8731d2c78bf1ab4afe10fb031cfc375f27551292d64f03ab1ac
font_01_sfnt_off0000e219.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE219 2052 bytes
SHA-256: 953da2a52d47a7511df70ac9e2bfa27c9b2c9c83997a120c944c1cdce221ad8c
font_02_sfnt_off0000eacc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEACC 10852 bytes
SHA-256: 732c87b5e9287600e990327c8f24036f4fff137a01b8cdc85dfe9693f837a75d

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