Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a059c26e0a98aed…

MALICIOUS

PDF

127.4 KB Created: 2021-03-21 22:06:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: e0390e2485a89e268d0aa61351892182 SHA-1: 5864794dfec90baadf3ecac69618bf6ffc39b4a0 SHA-256: 5a059c26e0a98aed0fe3709345b342f69e14bddb6dc89ab8f67570e15755a413
156 Risk Score
Tags
free-cdn-ebook-manual-lure

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. 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 0.9998

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 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://leonvi.ru/strik?utm_term=savarese+omt+review+4th+edition+pdf PDF link annotation
    • https://wilalunawotepa.weebly.com/uploads/1/3/4/6/134608105/362594d33c236.pdfIn PDF document text
    • https://paxupodef.weebly.com/uploads/1/3/4/7/134763896/xatezijomakowo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383471/normal_60091ae127060.pdfIn PDF document text
    • https://wajonurogizi.weebly.com/uploads/1/3/0/7/130738566/dajubepuxaduja_nukewig.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450151/normal_601dbaf778e75.pdfIn PDF document text
    • https://pojigivawoju.weebly.com/uploads/1/3/5/3/135348152/30761.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372074/normal_6010d57a6fd63.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/908a724e-3a25-4003-b3ca-f648aeeb2ad9/19778573522.pdfIn PDF document text
    • https://s3.amazonaws.com/farokof/91607161607.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/56c5525e-bd50-4b8f-a93c-df74d97cd94c/in_search_of_our_mothers_gardens_summary_and_analysis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ae8a19d4-c6ec-4eac-ad73-d54aa63ac6f5/71677461831.pdfIn PDF document text
    • https://s3.amazonaws.com/loneminovu/66351987573.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/29ca1898-ab7f-4581-b55a-b32400d6f5a2/el_dador_de_recuerdos_resumen_captulo_1.pdfIn PDF document text
    • https://s3.amazonaws.com/rabewiruzitewa/diy_hydroponics_systems_builder_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/kexamoxusinixu/96345914685.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/55f7b19e-1bcc-4ad7-8e89-39b85720b123/how_much_is_bill_carlton_worth_on_texas_metal.pdfIn PDF document text
    • https://s3.amazonaws.com/dedinavesute/nixisejuro.pdfIn PDF document text
    • https://s3.amazonaws.com/fixararololu/firirurivawak.pdfIn PDF document text
    • https://s3.amazonaws.com/dukavunivifa/52648823052.pdfIn PDF document text
    • https://s3.amazonaws.com/fokapikow/friday_the_13th_part_6_parents_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/873afbb9-4e3c-427e-a790-9b5aaf4f642e/47567307371.pdfIn PDF document text
    • https://s3.amazonaws.com/woxewiwupir/86162295486.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001b4ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B4EC 5592 bytes
SHA-256: b7b138fce672618793a4e4cb60fe4984a59c7063fa44d425b033be155c2db033
font_01_sfnt_off0001c7e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1C7E4 11856 bytes
SHA-256: 23574496aa50eda6d50d16cc12a7df7c307f520c221e2eb3d110ead38b77d862

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