Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e0bfe1388b1be43…

MALICIOUS

PDF

70.3 KB Created: 2020-12-06 15:52:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 65e6eb3b40d18f65ec3bc826f8ba5e72 SHA-1: dff676b9abb1d383a600b0596e132a881cec1a69 SHA-256: 1e0bfe1388b1be4330c3d3d70d2325fb3c8815831443859f68da575e1e315bf7
184 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

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 and routes users through malicious redirector infrastructure. 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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://traffmen.ru/strik?utm_term=nike+snowboard+boots+size+12 In PDF document text
    • https://zobuxojakaxux.weebly.com/uploads/1/3/4/6/134690110/95db0d1.pdfIn PDF document text
    • https://kejijasorakabil.weebly.com/uploads/1/3/4/3/134311956/fuvoku-veguwu-nokirutag-sajujen.pdfIn PDF document text
    • https://jefanumu.weebly.com/uploads/1/3/4/8/134889008/pizigadaxupem_perav_sagipufiw.pdfIn PDF document text
    • https://vonubaxuted.weebly.com/uploads/1/3/1/4/131452839/23a0c7580a1aa.pdfIn PDF document text
    • https://voziguwotameba.weebly.com/uploads/1/3/4/3/134345279/ffc40040a9e2.pdfIn PDF document text
    • https://vepovipozo.weebly.com/uploads/1/3/4/4/134472033/c7652.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/panokojol/jipadexuzuwawutelobo.pdfIn PDF document text
    • https://s3.amazonaws.com/werowibovezoje/dreamweaver_wordpress_template.pdfIn PDF document text
    • https://s3.amazonaws.com/nalifij/59795135176.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b62673e2-847f-4833-bef2-27fd0fa40cba/tudotikapijupop.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/775c9309-204a-432a-a8f3-fd2633d8655e/first_aid_for_the_obstetrics_and_gynecology_clerkship_fourth_edition.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/381b5997-c8ea-4ae9-864b-79ca9e3cb296/islam_empire_of_faith_episode_3_worksheet_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/bededuxotulapil/wosagupo.pdfIn PDF document text
    • https://s3.amazonaws.com/naxizugenabi/dikoju.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/38794446611.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c774.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC774 5076 bytes
SHA-256: 280a0a49a4c7a60665d0287d50daf4ffd7917deb85b4a26877f7d83077941d1e
font_01_sfnt_off0000d8d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8D6 10980 bytes
SHA-256: 1e47f704b06ffbe8363ad8ce82f0630a5afc2514e127b0cb1304be673c158252
font_02_sfnt_off0000fe39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE39 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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