Malicious PDF — malware analysis report

Static analysis result for SHA-256 42e2dd68b7ae4248…

MALICIOUS

PDF

73.1 KB Created: 2021-03-06 10:46:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: cadabdbeef1112bdf4a1ec7f0ee0528c SHA-1: d2418467cfcf7ab326f432b177ebba070ab581ab SHA-256: 42e2dd68b7ae4248038126928107fd5d5aafcf85adaf61651bdbd2ab742c4dff
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/strik?utm_term=how+to+begin+art In PDF document text
    • https://fidexirubopuzer.weebly.com/uploads/1/3/2/8/132815065/6e2099.pdfIn PDF document text
    • https://sagelaxun.weebly.com/uploads/1/3/4/5/134594749/lapiwevi_towofuxa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444371/normal_602f1de9b2519.pdfIn PDF document text
    • http://akvatehnika74.ru/bizerba_st_service_manualsr0b2.pdfIn PDF document text
    • http://nibodilakiwote.22web.org/numuwodaludolividukezufim.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485434/normal_5fffeaf987409.pdfIn PDF document text
    • https://sozazoje.weebly.com/uploads/1/3/1/1/131164180/8050895.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501501/normal_5ff2f07b56ded.pdfIn PDF document text
    • https://mubuwejazanewa.weebly.com/uploads/1/3/4/5/134585617/4967663.pdfIn PDF document text
    • http://natfreshik.fun/call_of_duty_mobile_appmirror9rmto.pdfIn PDF document text
    • http://rowowesofazov.medianewsonline.com/jilekirasivejodawugusezo.pdfIn PDF document text
    • https://joninotabuxid.weebly.com/uploads/1/3/5/3/135387421/5dee3afa0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lilepav.rf.gd/germanwings_crash_final_report.pdfIn PDF document text
    • https://s3.amazonaws.com/baxunaf/36152128110.pdfIn PDF document text
    • http://laguzovola.rf.gd/sears_garage_door_opener_replacement.pdfIn PDF document text
    • http://gogotefabup.rf.gd/how_to_crack_cisco_interview.pdfIn PDF document text
    • http://jonesojawu.myartsonline.com/gmat_mock_test_free_gmatclub.pdfIn PDF document text
    • https://s3.amazonaws.com/viregujipowuru/wilez.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_off0000e2c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2C1 4836 bytes
SHA-256: f5bebbe9de46c632573a6390e64a5cb4f3bb4e4daa4aec47e2543a9078dcb622
font_01_sfnt_off0000f35c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF35C 10684 bytes
SHA-256: 657509fb12ffb9fc4a1b80865e36c53c84e8e138c5d05e8b123a037bbe37992e