Malicious PDF — malware analysis report

Static analysis result for SHA-256 52e442d5c058284c…

MALICIOUS

PDF

89.6 KB Created: 2021-04-16 07:22:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: bf7fe1b56d72399abfcfda5b237d9501 SHA-1: a75e79f60f1d129ba41c4b33009bbd260c06f6b0 SHA-256: 52e442d5c058284c4f3edded29f6ca3aed34ec5d0cc54979c853e2fb37e1259c
156 Risk Score

Malware Insights

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

The PDF contains a large number of embedded external links, a technique often used for SEO farms or to redirect users to phishing sites. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded links suggest it's designed to lead users to malicious content hosted on external domains.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://mezovuduw.ru/strik?utm_term=who+made+fly+me+to+the+moon+famous PDF link annotation
    • https://pafegesufo.weebly.com/uploads/1/3/4/7/134719460/9273485.pdfIn PDF document text
    • https://revafabeku.weebly.com/uploads/1/3/4/7/134708131/fotibab_jobetefexu_vodedewolewux_xewozudumuwo.pdfIn PDF document text
    • https://wobufijurix.weebly.com/uploads/1/3/1/6/131607063/silebenobeb_sewufapukar_bujekirejumoj.pdfIn PDF document text
    • https://jutarufuro.weebly.com/uploads/1/3/0/7/130775772/kopanelijedu_kebodu.pdfIn PDF document text
    • https://mirijanonukuzo.weebly.com/uploads/1/3/2/7/132740352/kimomeselobefik.pdfIn PDF document text
    • https://cdn.sqhk.co/weruvewo/eghhdic/bolagojuzupefofemul.pdfIn PDF document text
    • https://cdn.sqhk.co/negarevuzesi/xjahitK/11388389042.pdfIn PDF document text
    • https://teguzefememefa.weebly.com/uploads/1/3/4/6/134609716/201625.pdfIn PDF document text
    • https://rojanebe.weebly.com/uploads/1/3/1/6/131637229/piwimosuvi_beluzewibes_lufox_wapukipopudiri.pdfIn PDF document text
    • https://melijezaziwoni.weebly.com/uploads/1/3/4/8/134851492/ff18ade14ee1e.pdfIn PDF document text
    • https://lodikesilir.weebly.com/uploads/1/3/4/8/134868057/bd15b8d843f254.pdfIn PDF document text
    • https://seruvukajobal.weebly.com/uploads/1/3/4/4/134479042/zokotusojama.pdfIn PDF document text
    • https://bejolikide.weebly.com/uploads/1/3/1/4/131437094/velubagolesetaxamo.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/belapawerezuju/angular_4_formgroup_in_formgroup.pdfIn PDF document text
    • https://s3.amazonaws.com/futamo/the_righteous_brothers_greatest_hits.pdfIn PDF document text
    • https://s3.amazonaws.com/dopugaxelelema/how_many_words_should_a_24_month_old_be_able_to_say.pdfIn PDF document text
    • https://s3.amazonaws.com/gidibesuxi/google_app_store_for_windows_10.pdfIn PDF document text
    • https://s3.amazonaws.com/tujeviwakirawu/c_spire_report_outage.pdfIn PDF document text
    • https://s3.amazonaws.com/wizuluworafid/chimpreport_news_now.pdfIn PDF document text
    • https://s3.amazonaws.com/garorowa/6036646271.pdfIn PDF document text
    • https://s3.amazonaws.com/gupojakami/technical_report_writing_in_computer_science.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_off0000fd69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD69 9684 bytes
SHA-256: 3ef120b1d3471f716dcfd4cccbee58c49b240a9519519a19bf1e08fe4d570773
font_01_sfnt_off00011dbe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11DBE 5168 bytes
SHA-256: dc0c026de3e9f2e2f012671b5da4aaf1a95c5d778325b6d51c23843c49afb67a
font_02_sfnt_off00012f40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12F40 12304 bytes
SHA-256: 67ca389f98ec29816a1f908cc69ca75633b67cd7874a750edcba632c450103b0

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