Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d438fca9b5b8ed1…

MALICIOUS

PDF

99.1 KB Created: 2021-03-23 05:39:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 4887e1a2ff3f1566cfc90b6096044738 SHA-1: 329f610cc8c93ba2298a769381850092ba09f2e7 SHA-256: 6d438fca9b5b8ed130aca2c27354b559a8c03876544fa1a1a0eba592f8fe42d8
196 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and ML classifiers, indicating a high likelihood of malicious intent. It contains numerous external links, including a link farm and an SEO redirector pointing to 'https://xezojetit.ru/wix?keyword=%25E0%25B8%25A1%25E0%25B8%25B4+%25E0%25B8%2599+%25E0%25B8%259E%25E0%25B8%25B5%25E0%25B8%258A+%25E0%25B8%258D%25E0%25B8%25B2+%25E0%25B8%25AA%25E0%25B8%25B9%25E0%25B8%2587'. The presence of these links suggests the document is designed to redirect users to potentially harmful websites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9979

Heuristics 6

  • 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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://xezojetit.ru/wix?keyword=%25E0%25B8%25A1%25E0%25B8%25B4+%25E0%25B8%2599+%25E0%25B8%259E%25E0%25B8%25B5%25E0%25B8%258A+%25E0%25B8%258D%25E0%25B8%25B2+%25E0%25B8%25AA%25E0%25B8%25B9%25E0%25B8%2587 PDF link annotation
    • https://s3.amazonaws.com/jizubisetebof/logofetutenu.pdfIn PDF document text
    • https://s3.amazonaws.com/voxulija/praise_and_worship_powerpoint_backgrounds_free.pdfIn PDF document text
    • http://wisagomojinux.iblogger.org/what_requirements_do_you_need_to_join_the_navy.pdfIn PDF document text
    • http://naturagrush.space/562682087627mgox.pdfIn PDF document text
    • https://s3.amazonaws.com/suxiweke/unclear_pronoun_reference_worksheet.pdfIn PDF document text
    • http://fepotarugagi.22web.org/18._2_conjunctions_and_interjections_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/vawoginele/business_case_analysis_template_free.pdfIn PDF document text
    • http://gufutaca5.xyz/nifuvirefamumufirovonee431y.pdfIn PDF document text
    • https://s3.amazonaws.com/gafedupeba/44407044647.pdfIn PDF document text
    • http://zufufamaz.66ghz.com/wanavokagojobajigivu.pdfIn PDF document text
    • http://doordash.link/lifobodipaxaxiwuselefupekk9uyt.pdfIn PDF document text
    • https://s3.amazonaws.com/zatazewoz/java_de_64_bits.pdfIn PDF document text
    • http://winoraama.site/what_are_the_5_basic_elements_of_communicationj6ebb.pdfIn PDF document text
    • http://steblin.pro/how_to_build_a_manual_machineqx9pk.pdfIn PDF document text
    • https://s3.amazonaws.com/lixisariwulo/bijunobizamawoni.pdfIn PDF document text
    • https://s3.amazonaws.com/wixatax/what_is_kakashis_red_eye_called.pdfIn PDF document text
    • http://www.opentle.orgIn 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/1a11905e-da8c-4a14-8409-150df20407ba/lisilix.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/11b9f4bf-b1e2-48a8-ae43-b6d308010553/jifogulifudatejazimunat.pdfIn PDF document text
    • https://7fc1e5b2-1dd8-4457-9de2-3dea1ab9f589.filesusr.com/ugd/fedd61_984b86a7e11c40769f3193493dc98a51.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/0c5ab9ca-218c-4523-970e-a7088063fe1f/algebra_with_pizzazz_did_you_hear_about_page_31_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c4cfa997-e1f7-4a9b-b34d-5ab83a087258/32555795230.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/460e03be-5534-4a07-8dcf-e5cfc65ea6dd/lewibates.pdfIn PDF document text
    • http://sekijipaladi.epizy.com/scorched_earth_full_movie_free.pdfIn PDF document text
    • https://d75bbb92-b0e4-4b50-83e6-2443e695523b.filesusr.com/ugd/bc73b9_978111e323724f938bae4b769b650f7b.pdf?index=trueIn 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://www.gnu.org/licenses/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00012579.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x12579 18884 bytes
SHA-256: e78276ca23946dc716afcc1d0bc27869d8d939eafc130498266f118ce0f90f3d
font_00_sfnt_off00010281.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10281 4068 bytes
SHA-256: 8e72149c7ce3095aec9cecc072f8a515df207c00aebf785f12c4fc197e954f4b
font_01_sfnt_off0001105b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1105B 7784 bytes
SHA-256: 51fb5a907e528f9d65af73fb429c3f1646f757c8d5b5cc7818deaa9db052646c
font_03_sfnt_off000157ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x157EF 10260 bytes
SHA-256: bad469b0d42217da5b0f828fa3a1f02c50d60c8a7c865ae229b6a2298935da95