Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d6e1088d2f4f53b…

MALICIOUS

PDF

70.6 KB Created: 2021-02-16 06:53:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 5a8793e325728631534469f9aa5d1a00 SHA-1: e15fa9837901208cd71d00d34d9a92c8926c9716 SHA-256: 1d6e1088d2f4f53b62d0c5c557b9dd4d9c2d61fb490f35186a10772def9183ed
214 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to known malicious redirectors or link farms, indicating a phishing or scam attempt. The heuristic 'PDF_SEO_LINK_FARM' and 'PDF_MALICIOUS_REDIRECTOR_LINK' strongly suggest this malicious intent. Although no scripts were explicitly extracted, the nature of the embedded links and the ML classification point towards a malicious document designed to redirect users to harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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 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.
  • 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+replace+the+delta+1700+series+shower+cartridge%2527 In PDF document text
    • http://ptmonline.ru/85168697058anc9n.pdfIn PDF document text
    • https://cdn.sqhk.co/tivanosox/aZIieUh/ocoee_river_barn_tn.pdfIn PDF document text
    • https://cdn.sqhk.co/jututumogu/fCYghgg/12072830998.pdfIn PDF document text
    • https://cdn.sqhk.co/zogameva/zCijggt/7222383953.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479705/normal_601ab74442fb0.pdfIn PDF document text
    • http://otomail.business/brain_teasers_for_adults_with_answers_mathda3yc.pdfIn PDF document text
    • https://noloxuxema.weebly.com/uploads/1/3/1/4/131453633/ad1c5ca.pdfIn PDF document text
    • https://cdn.sqhk.co/notenirikev/ceThhOZ/dawitifuxekojulere.pdfIn PDF document text
    • https://zolowokixo.weebly.com/uploads/1/3/0/7/130738875/nomoretipi_tefiguruteni.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388183/normal_5fd8cb677b1bd.pdfIn PDF document text
    • http://zusozovi.22web.org/aajtak_live_haryana_election_report_2019.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
    • 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_off0000c967.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC967 5376 bytes
SHA-256: 3f421700c5d112ff5d5c40582b69a0c218da73d801c8ad8db5611658b38ff4eb
font_01_sfnt_off0000dbe2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBE2 10480 bytes
SHA-256: 79c92236e42f4580be4ae7e29bf9bb8b635272cbb399374519aefbb0b5c51feb
font_02_sfnt_off0000ff8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF8C 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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