Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2e66bc10de48254…

MALICIOUS

PDF

64.1 KB Created: 2020-11-25 20:46:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 4c487dccac03dbe78256638eb055b3ab SHA-1: d1da4b9a6c88929dfd2bb83b556d0e9cec1eebf4 SHA-256: f2e66bc10de48254132c74819cad231f453a631d42f0fbb1af1c0cecb9219cb4
156 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ClamAV and an ML classifier, exhibiting characteristics of a phishing or malware distribution campaign. It contains a large number of external links, many pointing to Weebly-hosted PDFs, suggesting a link farm designed to redirect users to malicious content. The presence of embedded URLs and the overall structure strongly indicate an attempt to exploit users through deceptive links, likely as a spearphishing attachment.

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://trafftec.ru/aws?utm_term=asher+angel+chemistry+mp4 PDF link annotation
    • https://somisesi.weebly.com/uploads/1/3/4/5/134523690/3d10e39d43b9.pdfIn PDF document text
    • https://geripipo.weebly.com/uploads/1/3/4/3/134371036/kugorumojabivim.pdfIn PDF document text
    • https://xokafewapi.weebly.com/uploads/1/3/4/4/134488510/vukidasil-lowol-sinagebidiso.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/6069273.pdfIn PDF document text
    • https://suzigenetulaja.weebly.com/uploads/1/3/4/7/134756603/1311857.pdfIn PDF document text
    • https://vodipewelo.weebly.com/uploads/1/3/1/6/131637384/kisoneje.pdfIn PDF document text
    • https://woxomeze.weebly.com/uploads/1/3/4/4/134498023/2970970.pdfIn PDF document text
    • https://kavanezeso.weebly.com/uploads/1/3/4/4/134477356/5a4763.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://s3.amazonaws.com/legobegutulo/set_and_interval_notation_worksheet_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9920aa19-890a-4a57-9f51-468c26a8f976/dios_habla_hoy_buscad.pdfIn PDF document text
    • https://s3.amazonaws.com/jasadavebaga/18153829417.pdfIn PDF document text
    • https://s3.amazonaws.com/sazomo/32836509726.pdfIn PDF document text
    • https://s3.amazonaws.com/risalenefazozo/la_fitness_mill_creek_town_center.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9eca8dc1-8ec1-451f-b744-4fa1fb5b9c21/65596085523.pdfIn PDF document text
    • https://s3.amazonaws.com/gupojakami/debarolexususuzuresed.pdfIn PDF document text
    • https://s3.amazonaws.com/doxifuba/sri_manjunatha_tamil_songs_free.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_off0000b168.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB168 5204 bytes
SHA-256: 80647df99ec47f8cc9b94b5689640469f5db8af2afad16fd4788fb0c3d207949
font_01_sfnt_off0000c2f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC2F2 10064 bytes
SHA-256: 81237e287c3380d2f662dda0588c3c96e04f2e475adc89812eec8248f9412caf
font_02_sfnt_off0000e545.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE545 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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