Malicious PDF — malware analysis report

Static analysis result for SHA-256 d65a7420303abb5e…

MALICIOUS

PDF

77.0 KB Created: 2021-03-08 12:28:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 7b30844b1636cffba5337138d5f4b309 SHA-1: 9024c37b165283312d7b1ad9c575126a282d2556 SHA-256: d65a7420303abb5ea8273c9abc675e99283efb378d2314a0d3a390b139028586
156 Risk Score

Malware Insights

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

This PDF file is identified as malicious by multiple heuristics, including ClamAV and an ML classifier, and contains a large number of external links, suggesting a link farm or phishing attempt. The embedded URLs point to various PDF files hosted on external sites, likely intended to trick users into downloading further malicious content. No scripts were extracted, but the PDF structure itself is used to facilitate the malicious redirection.

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://crophysi.ru/strik?utm_term=elements+of+statistical+learning+pdf+github PDF link annotation
    • http://kind-insta.site/3328396854mbfes.pdfIn PDF document text
    • https://zadobezaja.weebly.com/uploads/1/3/0/7/130775221/wugapokudawu.pdfIn PDF document text
    • https://mixowikijanolu.weebly.com/uploads/1/3/1/8/131856844/7220563.pdfIn PDF document text
    • https://bawimivumo.weebly.com/uploads/1/3/4/6/134609907/wemerab-raxiwas.pdfIn PDF document text
    • https://xekexudaxojow.weebly.com/uploads/1/3/4/3/134365032/76948f51a4407.pdfIn PDF document text
    • http://kind-insta.site/mccormick_slow_cooker_chili_seasoning_ingredientsh878q.pdfIn PDF document text
    • https://boferisavupase.weebly.com/uploads/1/3/1/3/131384298/0bbdbaaa1.pdfIn PDF document text
    • http://medgaj.com/86868998412ma9dn.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kovawasokagi.epizy.com/kiviragomiliwalovilu.pdfIn PDF document text
    • http://nupakavidowux.epizy.com/96106174524.pdfIn PDF document text
    • https://1a2149e7-ca7f-4e7c-a584-0e483de6f3af.filesusr.com/ugd/9219f8_6470e2732798422697b66210d1d3e42b.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/fezenur/tezujigasoxikitulov.pdfIn PDF document text
    • https://s3.amazonaws.com/bogeguva/12598318084.pdfIn PDF document text
    • https://s3.amazonaws.com/belopudevuzuza/mizapuruzimufoleso.pdfIn PDF document text
    • http://sozazavore.rf.gd/99107364713.pdfIn PDF document text
    • https://s3.amazonaws.com/tobojelusiwi/vobufefe.pdfIn PDF document text
    • https://201a0bc5-0eb3-4135-8969-828875a6b07d.filesusr.com/ugd/607883_57b5d369c7fc46e88d80e7fa74a1e8a4.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/vuterijoze/wrong_turn_telugu_movie_hd.pdfIn PDF document text
    • http://ropedeni.epizy.com/kitchenaid_pro_600_design_replacement_bowl.pdfIn PDF document text
    • http://kajifota.epizy.com/how_hard_is_it_to_become_a_marine_scout_sniper.pdfIn PDF document text
    • https://a80c0318-1640-4d50-a016-df037fc402b9.filesusr.com/ugd/895bef_6dd2bb42b3a445ebbbe490d7810ec33e.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/doxifuba/finance_department_policies_and_procedures_template.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_off0000eeb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEB4 5668 bytes
SHA-256: 1611ce34f43f9c7ce495b5c94c12945760c1bcbd0503bf74125a68a52da9356d
font_01_sfnt_off000101c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101C5 10776 bytes
SHA-256: 58e564fb8ef8731f8205f2ca6608c21fa407d58387fde87dc21f85d40f5a1161

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