Malicious PDF — malware analysis report

Static analysis result for SHA-256 04f6483a65aa583c…

MALICIOUS

PDF

79.0 KB Created: 2021-02-26 19:59:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 1ac4d97bdf6fe4a50206617b862dd5c1 SHA-1: 961dd501e511a20528f56ca0e5b28f35ef8b2d5b SHA-256: 04f6483a65aa583c11015a4935b77af7f11c9fa4060777892fa5a2152d002f04
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 pointing to Weebly-hosted PDFs, suggesting a link farm or SEO manipulation tactic. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of malicious activity.

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://soxebez.ru/123?utm_term=the+mysteries+of+udolpho+detailed+summary PDF link annotation
    • https://xekafifem.weebly.com/uploads/1/3/4/6/134669887/dibiwo-toruwesaroduj.pdfIn PDF document text
    • https://kixumiziri.weebly.com/uploads/1/3/2/6/132681985/47a02ed82.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379603/normal_5fee12db93f50.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454299/normal_5ff8da12f3356.pdfIn PDF document text
    • https://gedijidejejew.weebly.com/uploads/1/3/0/7/130775336/679f697b48e3.pdfIn PDF document text
    • https://xiwabedosebu.weebly.com/uploads/1/3/1/3/131398066/953426.pdfIn PDF document text
    • https://pidofuvu.weebly.com/uploads/1/3/0/7/130739764/xusugetavedizut.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4406456/normal_5ffd727648884.pdfIn PDF document text
    • http://zemegazi.22web.org/10559801284.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470537/normal_601dd556a8dfb.pdfIn PDF document text
    • https://wevobuge.weebly.com/uploads/1/3/5/9/135978380/7826761.pdfIn PDF document text
    • https://rokozozo.weebly.com/uploads/1/3/4/4/134498035/losevadiloded.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/takateg/organisation_structure_template_ppt.pdfIn PDF document text
    • https://s3.amazonaws.com/timeziso/pinixewilixirazowe.pdfIn PDF document text
    • https://s3.amazonaws.com/mivokozibu/69346475626.pdfIn PDF document text
    • http://xamelolupete.epizy.com/9751680505.pdfIn PDF document text
    • http://sexikiti.epizy.com/dikabalevarovuvoxoki.pdfIn PDF document text
    • https://s3.amazonaws.com/firigugixujotov/9289035494.pdfIn PDF document text
    • https://s3.amazonaws.com/febopa/glynn_county_ga_jail_report.pdfIn PDF document text
    • https://s3.amazonaws.com/zazelujeju/manualidades_navideas_paso_a_paso_escrito.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_off0000f6ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6EE 5332 bytes
SHA-256: e03a4e35131fac2a1bdf20fb0a27de0a5df2399aaa0dac267cc3eb932999e707
font_01_sfnt_off000108e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108E6 11308 bytes
SHA-256: c976cc309e0231aa3a1d0e9aa18de91974515af2f65a304689b578babf25bd7c

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