Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee3d9f795695cb70…

MALICIOUS

PDF

75.7 KB Created: 2021-04-06 02:36:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: a8cf7f2574a2e1325e4fb7dd2a6cbb98 SHA-1: a02091777eec270e079ae04d8b1b97be26ec9dd1 SHA-256: ee3d9f795695cb70d9b89d19d0c76a7a74343a6611f1d97e94c6f130f8cd4d90
186 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm designed to redirect users to malicious content. The primary external URI points to 'https://xezojetit.ru/strik?utm_term=dir+655+emulator', which is likely the intended destination for the phishing or malware delivery attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://xezojetit.ru/strik?utm_term=dir+655+emulator PDF link annotation
    • https://zatibuvox.weebly.com/uploads/1/3/0/7/130738619/pibodiva-wodevoraga-zovizakulapovaf.pdfIn PDF document text
    • https://maraliva.weebly.com/uploads/1/3/2/7/132712127/lataxezudi_mopabadovas_jililenet.pdfIn PDF document text
    • http://sidikapefujuxe.22web.org/1578317272.pdfIn PDF document text
    • https://tunimesepet.weebly.com/uploads/1/3/1/4/131455680/8997562.pdfIn PDF document text
    • https://cdn.sqhk.co/fagaluwozez/jbLCY2z/chemguide_complex_ions_origin_of_colour.pdfIn PDF document text
    • https://cdn.sqhk.co/foroboreb/YhhEhbA/nixasiragowolorote.pdfIn PDF document text
    • https://webupusew.weebly.com/uploads/1/3/5/3/135344455/4778044.pdfIn PDF document text
    • http://resugigujo.iblogger.org/ap_english_language_and_composition_exam_rubric_2020.pdfIn PDF document text
    • https://mitapesazo.weebly.com/uploads/1/3/4/6/134652839/4586031.pdfIn PDF document text
    • https://jabifuvos.weebly.com/uploads/1/3/1/0/131070291/dazaw.pdfIn PDF document text
    • https://cdn.sqhk.co/ragojagef/hdgcnhe/90589699617.pdfIn PDF document text
    • http://zifujujefilat.iblogger.org/safarogali.pdfIn PDF document text
    • https://cdn.sqhk.co/veladaxuzeba/AJih7ig/66327710175.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kusotuwomaru.epizy.com/back_to_my_roots_lucky_dube.pdfIn PDF document text
    • http://garolelawugo.epizy.com/hindu_baby_girl_names_starting_with_a.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee7ceb60-778b-4ee0-991c-324fd7170738/mas_colell_microeconomic_theory_table_of_contents.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0dca15c6-0929-4077-8c90-fb373ba8a575/black_and_decker_air_fryer_toaster_oven_reviews.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b8bd344e-a9cd-455f-8218-a19cf15ba142/89918668612.pdfIn PDF document text
    • http://bitezopunofiwu.rf.gd/safafofivurubanutomiva.pdfIn PDF document text
    • http://velododitimof.rf.gd/bharat_movie_video_song_1080p.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8dd1ea68-760a-4bf0-9200-93f7bb51c14d/6372634338.pdfIn PDF document text
    • http://rumudawe.epizy.com/52337110563.pdfIn PDF document text
    • http://fiwajewefafomi.epizy.com/dazegevoge.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b7ddbea8-4d06-4465-99f3-bd7160354939/pepewosugilu.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_off0000ed48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED48 4932 bytes
SHA-256: 2cd01e355b111a81de8e5ae98d721b9dac364404482d96108c8a2d53cd704d8c
font_01_sfnt_off0000fdfd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDFD 10424 bytes
SHA-256: 8ceb4d4b4e9f51f1f840544d01e0bf8b2b570f91a8e5c7711730dcc21e020dd3