Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ec5609d1ab04a93…

MALICIOUS

PDF

64.7 KB Created: 2020-11-28 03:45:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: fad942fcd516a8af093afafde32adda4 SHA-1: c32f46c57e97830cff80a269e63a78ae66337300 SHA-256: 0ec5609d1ab04a93e9b92d5b4da3333e52d4b5b8a549de3ab66d0d6d16388535
186 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or malicious content delivery attempt. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm for SEO manipulation or to distribute further malicious content. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of malicious intent, likely related to directing users to harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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=punctuation+marks+worksheets+grade+9 PDF link annotation
    • https://bujupejokoluga.weebly.com/uploads/1/3/4/5/134576849/pudisutupafaze_ninaj.pdfIn PDF document text
    • https://wavigijaburejuw.weebly.com/uploads/1/3/4/5/134588531/kagos_folanajedol_bikisok.pdfIn PDF document text
    • https://gokopawe.weebly.com/uploads/1/3/4/4/134493337/8482708.pdfIn PDF document text
    • https://wefapewirevuvik.weebly.com/uploads/1/3/4/6/134667644/japujag_bagajivapi_xilesoxijupudos.pdfIn PDF document text
    • https://kojemugolipoxo.weebly.com/uploads/1/3/4/7/134729864/9435815.pdfIn PDF document text
    • https://vazitaxigenot.weebly.com/uploads/1/3/4/6/134640409/zopog-zufib-simuzatodetoku-zokamutazi.pdfIn PDF document text
    • https://gukegibulu.weebly.com/uploads/1/3/4/6/134668459/12fabf0d3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412582/normal_5fae6ea6ba674.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/b2720fe8-0fb2-4c0d-ab7b-daf1442a28a2/what_makes_a_good_sidekick.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d479e841-3330-42f4-91cb-7601624f265d/97840902501.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/235b65c4-19f9-4ed1-85fd-4a48e9a1bffa/ruwefijomotuv.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_off0000c031.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC031 5632 bytes
SHA-256: 7536123864aeb1448c0d3ce25337357cdb4baf2e112282551b0cfdde1baf8718
font_01_sfnt_off0000d342.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD342 10348 bytes
SHA-256: 4e0f4a2c287bfa8b5a98c0bfc5353775536d94cf538df7da81c25e776f88c7b9

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