Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb7ce89b0e964d3a…

MALICIOUS

PDF

75.0 KB Created: 2021-03-09 07:47:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 3f8199170d3e0f95d3dbae09b3de0816 SHA-1: 9d557f510f4811aefefe91fea5a3a448c2ca3da3 SHA-256: eb7ce89b0e964d3ad0d43b42f09ec349bd1e3882860d3ae1b5954b4614374e57
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://maypoin.ru/strik?utm_term=english+sayings+with+hindi+meaning PDF link annotation
    • http://xuwuvewisin.mypressonline.com/what_is_the_text_structure_of_the_last_paragraph.pdfIn PDF document text
    • http://idealica-itufficiale.website/autocad_manual_bookco2yq.pdfIn PDF document text
    • http://about-central.com/xefidadowowoguleda2dyxl.pdfIn PDF document text
    • http://pivevawibe.iblogger.org/samsung_bd-f5700_review.pdfIn PDF document text
    • http://oneplusonemain.xyz/43933506804nx414.pdfIn PDF document text
    • http://about-fb-support.com/cgp_gcse_edexcel_biology_workbook_answersigkwc.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/lososimap/basic_english_speaking_lessons.pdfIn PDF document text
    • https://ebc1add8-0b9d-418e-9e4a-1e287827e933.filesusr.com/ugd/ab63e3_0225da6c67af47c8bbac53ab78987dff.pdf?index=trueIn PDF document text
    • http://bidejepeko.onlinewebshop.net/96629241571.pdfIn PDF document text
    • https://s3.amazonaws.com/libowebujakux/dazoxe.pdfIn PDF document text
    • https://s3.amazonaws.com/xalexojaxipud/crib_bed_sheets_white.pdfIn PDF document text
    • https://9d1e48ad-bcd7-4831-9b7b-7108443a63b6.filesusr.com/ugd/136d07_4efdc8d0de384b9ca612c9f46e74dbbf.pdf?index=trueIn PDF document text
    • https://ff9dba89-6132-4485-99c2-ace8a2453124.filesusr.com/ugd/c3f59f_a22960dad16b414fb37927c11725d3a9.pdf?index=trueIn PDF document text
    • https://f59c0a4d-c104-43ac-8966-a5978cdf1b8c.filesusr.com/ugd/0c1ebd_2db26353aebd4a74a27a7cf46770e232.pdf?index=trueIn PDF document text
    • http://jiwabesufag.epizy.com/mapa_turstico_bilbao.pdfIn PDF document text
    • https://571cbd0a-ba82-408d-be6d-2df53a8fcfe5.filesusr.com/ugd/02af14_ec646c181e324fd082488ff26e441416.pdf?index=trueIn PDF document text
    • https://e924225a-aa46-4bfc-8e56-7341551e1833.filesusr.com/ugd/54dfea_fba40ed56165487893e54784f7c0b635.pdf?index=trueIn PDF document text
    • https://77da94c0-0f0a-445b-87af-e489a0b5ef66.filesusr.com/ugd/db1da1_234b8f10a1d64c50b7804fcffffcbc06.pdf?index=trueIn PDF document text
    • http://fubuwutunofo.rf.gd/7449554216.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_off0000e807.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE807 5292 bytes
SHA-256: 6e3ba342cb18598a72d0e2dbd0dec5f81e925301271fef51945f5151f257d1cc
font_01_sfnt_off0000fa03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA03 10988 bytes
SHA-256: 11583d3a770e5afee04db470bf064c5e7fefa17591642134c2126ee9415586b3

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