Malicious PDF — malware analysis report

Static analysis result for SHA-256 54601c7353e600ec…

MALICIOUS

PDF

90.9 KB Created: 2021-05-06 17:15:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 589ef953a667af9c8f930aa7ce70ae8d SHA-1: 5531febf982340e7c32ee5ec245fa4a69638c050 SHA-256: 54601c7353e600ecf9dbbd5db9dd194c63d14f8f0ad1ae34c069bf1190ff5822
134 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. It uses an urgency-based lure. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://baarspo.ru/strik?utm_term=graco+snugride+click+connect+35+installation PDF link annotation
    • http://xesesevatep.22web.org/rived.pdfIn PDF document text
    • http://7lessons.fun/gufujigiwesumuxidelefui0izr.pdfIn PDF document text
    • http://kitigaw.22web.org/50169043901.pdfIn PDF document text
    • http://vigastlens.xyz/what_does_positive_illusion_mean_psychologyylzlp.pdfIn PDF document text
    • http://warixedivukinat.mygamesonline.org/76347546735.pdfIn PDF document text
    • http://abreudesigns.com/antares_harmony_engine_torrentinrtj.pdfIn PDF document text
    • http://zahlungsservice-ch.site/560196882433pvft.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://rojaxenutu.rf.gd/macroscale_and_microscale_organic_experiments_6th_edition_citation.pdfIn PDF document text
    • https://356bbf58-84af-4bff-99a9-d03346e46411.filesusr.com/ugd/b5472a_4e32511984f84adeb2c4a24b0e82c37d.pdf?index=trueIn PDF document text
    • http://xexosekijifakam.epizy.com/29936830368.pdfIn PDF document text
    • http://pekamidakoj.atwebpages.com/the_power_of_now_audiobook_full.pdfIn PDF document text
    • http://susesibukof.epizy.com/mozotokuwez.pdfIn PDF document text
    • http://zovopabipani.rf.gd/pumujugusosep.pdfIn PDF document text
    • http://nuvefugokudob.epizy.com/praeludium_1_bwv_846.pdfIn PDF document text
    • http://mozolawaguj.epizy.com/how_many_scoops_of_coffee_for_6_cups_cuisinart.pdfIn PDF document text
    • https://0ea1ff7f-05b3-43a2-9744-178351a05ed1.filesusr.com/ugd/01f9b9_dbf40e836cd247539717cebd9694565a.pdf?index=trueIn PDF document text
    • https://2c9641c8-5874-4869-9b94-f1378e60aa6b.filesusr.com/ugd/efc1f6_ef6f7ed37d864b6b8b31d495485d4dc2.pdf?index=trueIn PDF document text
    • http://sefijepevuzazax.rf.gd/vufowa.pdfIn PDF document text
    • http://surafupomef.epizy.com/imperative_of_integration.pdfIn PDF document text
    • https://0b21792c-a699-4cf4-8833-5910c6ad58af.filesusr.com/ugd/b0b521_38537382fd2f4a1c9fe251f36b9a6e77.pdf?index=trueIn PDF document text
    • http://zelimuperuna.rf.gd/bernoulli_differential_equation_examples.pdfIn PDF document text
    • https://77483064-5892-4b52-b419-66e751946b77.filesusr.com/ugd/ef7b09_a5270f2f9e80416aa97fd5a803ed26c3.pdf?index=trueIn 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_off0001166a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1166A 5372 bytes
SHA-256: e79e345e6315ccc90613b5688e6b485f9d72fc8023bbf06e770d04762c109b97
font_01_sfnt_off000128bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x128BD 11036 bytes
SHA-256: bf8df76f852eed139bd08dc3a600e9977c10a37a0ee9ac58406966c95b7b35e7
font_02_sfnt_off00014e2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14E2E 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f