Malicious PDF — malware analysis report

Static analysis result for SHA-256 05f6273b6b685031…

MALICIOUS

PDF

80.6 KB Created: 2021-05-02 17:37:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 1011be2605d739a1134ea7d8f5689e8b SHA-1: 27061ffeb5e3ae78109e2f2828379aa50feebb9e SHA-256: 05f6273b6b685031540244dfadc8091401e91028c38d7ec13474990212a775fc
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which are structured as a link farm, suggesting an attempt to manipulate search engine results or distribute malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically phishing. The embedded URLs point to suspicious domains, likely serving as landing pages for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://soxebez.ru/strik?utm_term=why+is+my+whirlpool+freezer+not+freezing PDF link annotation
    • http://tatanip.medianewsonline.com/65243759543.pdfIn PDF document text
    • https://sivofalurujipi.weebly.com/uploads/1/3/4/7/134700052/zinegenirid-mogasimukuda-birugiretol-vetekidom.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414352/normal_603566c563de0.pdfIn PDF document text
    • https://mawubuzepegi.weebly.com/uploads/1/3/3/9/133989242/6450963.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473053/normal_60110153ccbfa.pdfIn PDF document text
    • https://bewulikafujisew.weebly.com/uploads/1/3/5/3/135326730/pozoxevezekujupa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4401712/normal_5ffc75fcd01e9.pdfIn PDF document text
    • http://xosubowavenu.mypressonline.com/zolok.pdfIn PDF document text
    • https://xinotetul.weebly.com/uploads/1/3/5/3/135351743/a83a1d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461232/normal_60527e692407d.pdfIn PDF document text
    • http://fudazozotakaxal.mywebcommunity.org/encyclopedia_brown_download.pdfIn PDF document text
    • https://duvedibis.weebly.com/uploads/1/3/4/1/134131600/7440597.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
    • https://s3.amazonaws.com/salosibejodod/military_surplus_tents_for_sale_canada.pdfIn PDF document text
    • http://widifusi.myartsonline.com/spondylosis_exercises.pdfIn PDF document text
    • http://pepebejawu.epizy.com/46465750568.pdfIn PDF document text
    • http://wexejof.epizy.com/calendar_cdr_file_free.pdfIn PDF document text
    • https://s3.amazonaws.com/tiniruru/80991709976.pdfIn PDF document text
    • https://s3.amazonaws.com/jamuluvuvava/83891960867.pdfIn PDF document text
    • https://s3.amazonaws.com/jixerubowi/the_expanse_season_4_actors.pdfIn PDF document text
    • http://lufepurobu.epizy.com/jakux.pdfIn PDF document text
    • https://s3.amazonaws.com/sesijesule/reddit_yugioh_duel_links_beginner_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/pegek/all_seasons_uniforms_reviews.pdfIn PDF document text
    • https://s3.amazonaws.com/kawotexulozax/31333477734.pdfIn PDF document text
    • http://rebikaxizoso.rf.gd/tidevenitab.pdfIn PDF document text
    • http://fakeduzit.rf.gd/calendario_settimane_2018.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_off0000efb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFB4 5148 bytes
SHA-256: db08624dc338cfd84d3e05972ed67c43dd484f511b8b629c4a6fc33322ca4b35
font_01_sfnt_off00010133.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10133 10860 bytes
SHA-256: 7c61a857ea80676b886e6cfb7ea8c850280d1f193f39c65d81f234c3fee5c25c
font_02_sfnt_off0001265a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1265A 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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