Malicious PDF — malware analysis report

Static analysis result for SHA-256 d81568367076b131…

MALICIOUS

PDF

77.7 KB Created: 2021-03-19 18:29:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 4a23b08067d0ebf5b0fe8ecc3d2b448b SHA-1: efcf18f87fe82df242809d05bdbf3336cdff7023 SHA-256: d81568367076b13165f97614113b98cc7c0ae8c7880ecbe50dd23b2a2889239b
156 Risk Score

Malware Insights

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

The PDF contains a link farm heuristic, indicating an attempt to manipulate search engine results or direct users to a large number of external resources. The primary URL, 'https://soxebez.ru/123?utm_term=jobs+worksheet+for+kindergarten', suggests a lure related to job opportunities. ClamAV and ML classifiers also flagged this PDF as malicious, specifically as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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://soxebez.ru/123?utm_term=jobs+worksheet+for+kindergarten PDF link annotation
    • http://rutenowataba.iblogger.org/bose_companion_3_series_2_not_working.pdfIn PDF document text
    • https://dujinagipufamod.weebly.com/uploads/1/3/4/5/134587046/526aefbbb381b.pdfIn PDF document text
    • https://vubenazago.weebly.com/uploads/1/3/4/3/134357699/40590e783607.pdfIn PDF document text
    • https://gotukedefiwukub.weebly.com/uploads/1/3/5/3/135309477/dc4b6c1ab1dae1.pdfIn PDF document text
    • https://vajepagipe.weebly.com/uploads/1/3/4/0/134000011/rudoniliru.pdfIn PDF document text
    • https://koniwosusuzese.weebly.com/uploads/1/3/1/8/131856176/fokidugoxixuki_fejonir_mitizabejota.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://a7193630-a032-4ee2-b136-33837135b76a.filesusr.com/ugd/fac845_3670f84acf4e426b9135393b4fd146da.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/petikamov/63764955936.pdfIn PDF document text
    • https://89e5ed4a-33eb-42a6-b5f1-9fc07ea1e15b.filesusr.com/ugd/ff68bb_9eb5ff82d8364ab39f6dcecd4e9ae8e3.pdf?index=trueIn PDF document text
    • https://cb70cc59-2297-49c3-b7e2-2ac7e26e28d4.filesusr.com/ugd/4479ed_06bb34635bc64b50a000da17975361f0.pdf?index=trueIn PDF document text
    • http://vikogen.epizy.com/nutrients_journal_template.pdfIn PDF document text
    • http://nebovorem.epizy.com/sakawogowu.pdfIn PDF document text
    • http://tanozetodane.rf.gd/sokidu.pdfIn PDF document text
    • https://s3.amazonaws.com/womirofop/boston_complete_streets_design_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/jobavo/148821142.pdfIn PDF document text
    • https://s3.amazonaws.com/gebukil/difebijulinugapus.pdfIn PDF document text
    • https://5e446c31-fcb6-4427-a178-91ee45bbff8b.filesusr.com/ugd/4e76b8_7c1315358eff4d929f8062d704b97eee.pdf?index=trueIn PDF document text
    • https://9c789f27-b70c-4c9d-9e83-211ee8f99b38.filesusr.com/ugd/bdeb4c_dea0dadb196d47f693b272816b5a7ac6.pdf?index=trueIn PDF document text
    • http://dagajevefud.epizy.com/67016209759.pdfIn PDF document text
    • https://s3.amazonaws.com/benuka/molefi.pdfIn PDF document text
    • https://s3.amazonaws.com/zoluwivebiro/why_isnt_my_hotspot_working_straight_talk.pdfIn PDF document text
    • https://s3.amazonaws.com/mejifavo/sd_card_corrupted_cannot_format.pdfIn PDF document text
    • https://s3.amazonaws.com/tofizo/critical_path_analysis_template.pdfIn PDF document text
    • https://69a21580-3c80-4f81-8097-1ec0bc18215d.filesusr.com/ugd/bd7df1_a2f332fa5a73461f9d76176a8be08425.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/limepusotanal/91927302311.pdfIn PDF document text
    • https://s3.amazonaws.com/kawotexulozax/2014_ford_escape_s_owners_manual.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_off0000f0f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0F2 5424 bytes
SHA-256: 59bc59c8704f7b65d6dfdc1da5bdf8a3cd72340c13335a3a54ae32c78f427153
font_01_sfnt_off0001036e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1036E 11048 bytes
SHA-256: 09e7c147e826b9bb878c80ec491ea01f840353db287481313e1abd4b17e7e889

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