Malicious PDF — malware analysis report

Static analysis result for SHA-256 02e40364c50318cb…

MALICIOUS

PDF

71.2 KB Created: 2021-05-05 00:41:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: ccff68973b3ca02b64483707b5fdddce SHA-1: a3609a4a3ac1a06c6f57f1aa044d56cedbae9246 SHA-256: 02e40364c50318cba1a943f553bd631d671af7e33d5f21e247bb59b372f05c7d
186 Risk Score

Malware Insights

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

The PDF contains a significant number of external links, many hosted on disposable domains, indicating a link farm or phishing attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs point towards a malicious document, likely used as a lure to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • 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://seumenha.ru/strik?utm_term=bushnell+telescope+northstar PDF link annotation
    • https://vagobodowi.weebly.com/uploads/1/3/4/6/134600101/2833998.pdfIn PDF document text
    • https://kojezuduw.weebly.com/uploads/1/3/5/3/135326104/pufizekiraw_lixex_pegejinodalosi_jejubomo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481417/normal_60256daa6688d.pdfIn PDF document text
    • https://jabuvevakeg.weebly.com/uploads/1/3/4/6/134685488/8749123.pdfIn PDF document text
    • https://juzubuju.weebly.com/uploads/1/3/4/7/134703155/pibigitefanaxip-lawave-bafadekakolofi.pdfIn PDF document text
    • https://roruzutal.weebly.com/uploads/1/3/4/5/134592711/nefinireso.pdfIn PDF document text
    • https://sileperu.weebly.com/uploads/1/3/1/4/131406390/rasuwololizir_pigigu.pdfIn PDF document text
    • https://wufezaju.weebly.com/uploads/1/3/0/7/130738917/mazanuruse.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381302/normal_605d6e52c99bc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459624/normal_60213f0d3aadb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495241/normal_601632b5a00e8.pdfIn PDF document text
    • https://bimejijanaki.weebly.com/uploads/1/3/5/9/135986904/9570a.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/cc8e0fc3-af8b-450b-9180-07cca6172103/what_kind_of_questions_are_asked_in_a_psychological_evaluation_for_police.pdfIn PDF document text
    • https://s3.amazonaws.com/nerugiraxura/bhairava_geetha_kannada_full_movie_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4e036506-79e3-473d-b775-f4efe2c6221b/71165570496.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/677a161c-2ee0-4838-9538-0491c995d05b/uglys_electrical_desk_reference.pdfIn PDF document text
    • https://s3.amazonaws.com/woxojuxafopuv/51499949023.pdfIn PDF document text
    • https://s3.amazonaws.com/pirosisob/android_api_19_or_above.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0c1f195c-7f99-49ac-8b09-43372437f0c6/zabosopoxe.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_off0000d929.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD929 5068 bytes
SHA-256: 4a1c816ee213897fe5265fc0a4ffdab571ce5af8d5160fc095169b14935b957f
font_01_sfnt_off0000ea5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA5E 11020 bytes
SHA-256: c7c3cf43f2bb327f1631b419e06f2f2a3ff88635eed717c09d4bd02a876e4b24

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