Malicious PDF — malware analysis report

Static analysis result for SHA-256 705c9908509c3f6a…

MALICIOUS

PDF

77.9 KB Created: 2021-03-16 00:30:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 93348e9f9d7ef7178ef4fef39ec970b3 SHA-1: c0800ae38c8b6d0f972a0ab5134419deb0efe7ff SHA-256: 705c9908509c3f6ab0465553db054b1caf8eeabb3608c7b49bdc9cabbb773773
126 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, with one prominent URL leading to a suspicious domain that appears to be part of a link farm designed for SEO manipulation. The document body, though partially corrupted, suggests a lure related to biblical studies, which is likely a pretext to direct users to the malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://midufefew.ru/strik?utm_term=leer+biblia+hebrea+en+espa%25C3%25B1ol+online PDF link annotation
    • https://xerutofen.weebly.com/uploads/1/3/4/5/134578778/lipugidakimexi.pdfIn PDF document text
    • http://bazunujovi.scienceontheweb.net/vipotijireziravidof.pdfIn PDF document text
    • http://lobabinuladeri.medianewsonline.com/how_to_fix_water_leak_in_kenmore_refrigerator.pdfIn PDF document text
    • https://livuwijonirib.weebly.com/uploads/1/3/4/7/134732661/gimeruzenilarumaside.pdfIn PDF document text
    • https://buzegiregusa.weebly.com/uploads/1/3/6/0/136082094/gexed_xifalaluzapoguw_sozurosavoput_wofejanoteva.pdfIn PDF document text
    • https://wovigapugup.weebly.com/uploads/1/3/2/7/132710676/637b3806.pdfIn PDF document text
    • https://lebotisoko.weebly.com/uploads/1/3/4/5/134597635/3bd5129.pdfIn PDF document text
    • https://gimelasu.weebly.com/uploads/1/3/4/5/134513778/jugojasusubek.pdfIn PDF document text
    • http://pozijuza.scienceontheweb.net/loxugogotujufoga.pdfIn PDF document text
    • https://nixunirebexif.weebly.com/uploads/1/3/0/7/130776125/sajiz.pdfIn PDF document text
    • https://cdn.sqhk.co/zepipawetopi/Ewgchdm/jumping_dinosaur_online.pdfIn PDF document text
    • https://fosobezi.weebly.com/uploads/1/3/4/8/134898374/8938775.pdfIn PDF document text
    • https://cdn.sqhk.co/popaxutu/cmX7J0i/super_raiden_clock.pdfIn PDF document text
    • https://cdn.sqhk.co/fafojipedul/hIMT2b0/66333172814.pdfIn PDF document text
    • http://sokojutefame.iblogger.org/yankee_doodle_sheet_music_with_letters.pdfIn PDF document text
    • https://kadefevexenikoz.weebly.com/uploads/1/3/0/8/130813118/86febfe5182.pdfIn PDF document text
    • http://koxuduravinas.22web.org/kukamororakipatuboxom.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/julexekubaj/5021720145.pdfIn PDF document text
    • https://s3.amazonaws.com/penale/css_selectors_cheat_sheet.pdfIn PDF document text
    • http://madanekobovuge.epizy.com/hair_cutting_boy_image.pdfIn PDF document text
    • http://gitakatad.epizy.com/george_foreman_6-portion_entertaining_grill_with_removable_plates_20850_-_black.pdfIn PDF document text
    • https://s3.amazonaws.com/buwosevax/96875160029.pdfIn PDF document text
    • http://wonanikapudidak.atwebpages.com/sipuburumep.pdfIn PDF document text
    • https://s3.amazonaws.com/zasepo/sovidotepemi.pdfIn PDF document text
    • https://s3.amazonaws.com/zufojadibi/22213861558.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_off0000ef32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF32 5200 bytes
SHA-256: 37e445835ecc5e15a5df8564dc0f1371623c6eb9272350c4616e4bc27db8b3cc
font_01_sfnt_off00010090.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10090 12224 bytes
SHA-256: 9c935c506b46b546b841ffc279460b089fa21c6e3a0dcba5c0ba43d25deb3200

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