Malicious PDF — malware analysis report

Static analysis result for SHA-256 84825ca9a9939209…

MALICIOUS

PDF

67.8 KB Created: 2020-12-27 17:13:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: bc27c639a24b1f2a7fca21d4ffb604c2 SHA-1: 32c55ccf0915d1131c646bc92747ebde66d133de SHA-256: 84825ca9a993920977861b6dfc82207dc8e2f6600b0cae3acee495dc177ee0c2
96 Risk Score

Malware Insights

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

The file is a PDF document flagged as malicious by ML classifiers and ClamAV. It contains an embedded URL that leads to a phishing site, disguised with text related to a pharmacy. The PDF structure and embedded content suggest it's intended to trick the user into clicking the malicious link, likely as part of a phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://trafficel.ru/strik?utm_term=umc+pharmacy+west+el+paso+tx PDF link annotation
    • https://cdn.sqhk.co/mifimafonuku/eicje8y/bike_game_download_free_for_mobile.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405190/normal_5fe7cd5a7a4c6.pdfIn PDF document text
    • https://cdn.sqhk.co/fawabanof/CjeojiD/sorasefuxenuzakurax.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366339/normal_5f879d846942c.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/161265f1-1f47-4ccc-a4c1-25234ecea19b/79846370065.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e69fd544-a23f-4ff2-8eba-4752944a394f/pronoun_antecedent_agreement_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/regegozumekoza/terms_of_service_contract_template.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/02a8eb86-887b-4c1d-b69b-e56d1f84e8f3/29870366521.pdfIn PDF document text
    • https://s3.amazonaws.com/xalexojaxipud/kenmore_coldspot_model_106.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b733dda8-3e01-43ad-b769-e9b8f8bb703f/jogeronunapawuvidifawuzet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2ca04634-d988-44c7-acce-2ac067f5b62f/tanim.pdfIn PDF document text
    • https://s3.amazonaws.com/jupevuxirapi/lesson_1_sentence_completion_answer_key.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_off0000cd0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD0E 5424 bytes
SHA-256: fa1ae08f0c1e92b7ab3608321f203b3859309bead92d59379cff7e83ba70f53e
font_01_sfnt_off0000df76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF76 10300 bytes
SHA-256: ba814c20354bcf75f0394d4530eb1ae8f7f7cb21cbfd56f030be04901b199752