Malicious PDF — malware analysis report

Static analysis result for SHA-256 e871fe6216db5ef2…

MALICIOUS

PDF

75.8 KB Created: 2021-03-15 19:21:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: cf2138d8241cc9e4ca83fde2ae059374 SHA-1: f00733861dca8a5533e3aa6aed3c394577c656df SHA-256: e871fe6216db5ef22ef63a271e2b8818d4cf788cd739199d0b20cb26fd50ec0c
126 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV. It contains numerous embedded URLs, including one pointing to 'xezojetit.ru', suggesting a phishing or malware distribution attempt. The PDF_SEO_DISPOSABLE_LINK_FARM heuristic indicates a link farm hosted on disposable domains, further supporting a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://xezojetit.ru/123?utm_term=dubizzle+app+apk PDF link annotation
    • https://revogofoti.weebly.com/uploads/1/3/3/9/133999152/3027968.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366645/normal_60471186ef8b0.pdfIn PDF document text
    • https://badakawage.weebly.com/uploads/1/3/0/9/130969543/dapadozonapakin_zefut.pdfIn PDF document text
    • https://revugegan.weebly.com/uploads/1/3/4/6/134682990/zebobifoneveji.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426972/normal_602909da8dc4f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417208/normal_600dcef872e35.pdfIn PDF document text
    • https://gerukule.weebly.com/uploads/1/3/1/6/131606739/bavukejukajan-sabowokox-roteli-rosonuni.pdfIn PDF document text
    • https://tuledekubixa.weebly.com/uploads/1/3/4/7/134722649/judavolazik.pdfIn PDF document text
    • https://tudadakamoziv.weebly.com/uploads/1/3/4/5/134596668/wigidakowejawowaj.pdfIn PDF document text
    • https://jipukikibowema.weebly.com/uploads/1/3/4/6/134633032/2165423.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371809/normal_5fddfa17b903f.pdfIn PDF document text
    • http://wogamilip.iblogger.org/35452133426.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390995/normal_6012cecc035a6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443598/normal_604bb62f6bf65.pdfIn PDF document text
    • https://muxupodijem.weebly.com/uploads/1/3/4/8/134885552/9b53eac9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4390373/normal_5fe35db572bf9.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://toxanezijar.rf.gd/vuvexiz.pdfIn PDF document text
    • http://lobulowigewimu.epizy.com/gibujapegabazujarogoxapes.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dfb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFB4 4380 bytes
SHA-256: 0baf9b184047052c78ba350f7171cddb34dfccc8b33da31ff8415d7d8e20581b
font_01_sfnt_off0000ee96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE96 11064 bytes
SHA-256: bd15ee8b78d19906db3bb5ad8cb490a3dd957dc014485e7595e69d725e903c48
font_02_sfnt_off00011436.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11436 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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