Malicious PDF — malware analysis report

Static analysis result for SHA-256 074d3293a58aa97c…

MALICIOUS

PDF

80.3 KB Created: 2021-02-19 20:52:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 18efe1be90fe95ade174f30431c00100 SHA-1: de3c881b78d6f1c3fa42a9faa5f62814cf8b9e42 SHA-256: 074d3293a58aa97cf1cd64c4ac03c5d8be0331c4b540c02935c386358bf3b063
186 Risk Score

Malware Insights

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

This PDF document contains a large number of external links, many pointing to disposable domains, suggesting a link farm or phishing operation. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and numerous external links are indicative of a malicious document designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://leonvi.ru/strik?utm_term=how+to+avoid+fees+with+bank+of+america PDF link annotation
    • http://poopo.ru/ranamododazukixopuvufv29jm.pdfIn PDF document text
    • https://xezelugewopisaw.weebly.com/uploads/1/3/5/3/135311865/5073854.pdfIn PDF document text
    • http://academic-club.ru/motorola_maxtrac_manual98691.pdfIn PDF document text
    • http://ch-data-2a8fv9s.pw/c_string_format_codes6blew.pdfIn PDF document text
    • https://gigemapafinul.weebly.com/uploads/1/3/1/3/131398374/2990674.pdfIn PDF document text
    • http://strapslap.online/lotro_loremaster_solo_guideykzhu.pdfIn PDF document text
    • https://mirezavofuju.weebly.com/uploads/1/3/4/8/134870541/85f89103fd895.pdfIn PDF document text
    • https://voxivunesiru.weebly.com/uploads/1/3/1/4/131407918/sewumitopun-xiboze-xatafazilafi.pdfIn PDF document text
    • http://xusatekekosigi.iblogger.org/hillsong_worship_songs_mix.pdfIn PDF document text
    • https://jagunafine.weebly.com/uploads/1/3/4/3/134363358/gogoxukuvo-zixemozu-dusabawanebes.pdfIn PDF document text
    • http://microbladingcertificationdfw.org/firebase_write_to_google_sheetsqj1rz.pdfIn PDF document text
    • http://ifeelgood.club/88952357431oicfe.pdfIn PDF document text
    • http://testersairf.xyz/hot_tsjekkiske_porn635pl.pdfIn PDF document text
    • http://bosnoslovnoejelaniekupit.xyz/what_am_i_riddle_answers_5poolw.pdfIn PDF document text
    • https://jimekomu.weebly.com/uploads/1/3/1/4/131453536/281103.pdfIn PDF document text
    • https://gewilede.weebly.com/uploads/1/3/4/3/134311853/2883437.pdfIn PDF document text
    • https://mesowusiwa.weebly.com/uploads/1/3/5/9/135975120/digekosevafukusugaw.pdfIn PDF document text
    • http://goduvide.22web.org/farming_simulator_15_guide.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/godoremitiwuja/17978982298.pdfIn PDF document text
    • http://gosonuvubunevo.epizy.com/frette_sateen_sheet_review.pdfIn PDF document text
    • http://zinezalidoratov.rf.gd/26570722326.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_off0000fd5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD5B 5548 bytes
SHA-256: 911621d2d35aa9b5bdbfd2fc45cefeae7d9b12e62d714532afd03eca49dd5555
font_01_sfnt_off00011025.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11025 10376 bytes
SHA-256: 2c1f2c9fe5f2cae8741628e84139fe9949bd94fe180cc4ba148a8efbd00f8f7f

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