Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee4e62d1f1b43e75…

MALICIOUS

PDF

72.7 KB Created: 2021-03-08 21:06:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 7b1db5b5fda1a9411e3f5f9bc34ff106 SHA-1: b50d025751bbb071e05be572c3928e695ca8b321 SHA-256: ee4e62d1f1b43e7592821eb09a2970c9fcf2ebc39a09a8fc58494c4b2ca04564
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

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 0.9956

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://leonvi.ru/aws?utm_term=possessive+pronouns+exercises+grade+3 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4455884/normal_5fcb10c276448.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381544/normal_5feb6d25d7916.pdfIn PDF document text
    • https://pananufizusa.weebly.com/uploads/1/3/4/4/134445813/9536a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470687/normal_60413933d65ef.pdfIn PDF document text
    • https://sobidoduwipiver.weebly.com/uploads/1/3/1/4/131406433/fozabojopu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446270/normal_6000c1d705fae.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479905/normal_5fd9e8e46d60b.pdfIn PDF document text
    • https://junobinedutuki.weebly.com/uploads/1/3/2/7/132712306/gavusalag.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482402/normal_5fee0737db230.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412899/normal_5fd5eff0e9720.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417129/normal_6033959f426e2.pdfIn PDF document text
    • https://xodozevonewoze.weebly.com/uploads/1/3/1/3/131384462/bibokesoke_fizija_denip_fazul.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453732/normal_6008089af0611.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387581/normal_601418eb5f4c4.pdfIn PDF document text
    • https://makifilibavik.weebly.com/uploads/1/3/5/3/135383918/liroxuw_vomosadivakum_lorexudoke_wubogowobi.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/wexoteluwag/my_bot_clash_of_clans_free.pdfIn PDF document text
    • https://s3.amazonaws.com/juzewojavomofew/kolibatikuvewezoxaxoluxol.pdfIn PDF document text
    • https://s3.amazonaws.com/nevovumowa/rizagufuwu.pdfIn PDF document text
    • https://s3.amazonaws.com/regufojalojaza/dujubazikizupifironopog.pdfIn PDF document text
    • https://s3.amazonaws.com/nokiva/vutuxekelusinemopa.pdfIn PDF document text
    • https://s3.amazonaws.com/bewibiwat/brochures_template_publisher.pdfIn PDF document text
    • https://s3.amazonaws.com/roware/xuvozajovejejipu.pdfIn PDF document text
    • https://s3.amazonaws.com/nijosinizo/4253723100.pdfIn PDF document text
    • https://s3.amazonaws.com/rujabepifar/aortic_root_aneurysm_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/xomepixo/nine_fruits_of_the_holy_spirit_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/rupatojuko/pamefaf.pdfIn PDF document text
    • https://s3.amazonaws.com/pobixedele/vafurafu.pdfIn PDF document text
    • https://s3.amazonaws.com/befafuni/bleacher_report_nfl_week_7_score_predictions.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000de3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE3C 5504 bytes
SHA-256: 41c80c118672cded084ced988415654117a640fcb433eb50a267a2bb9b6ee3b8
font_01_sfnt_off0000f113.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF113 10488 bytes
SHA-256: cfe8b097d1e82208b0df9939fb74219bb5d218ed50eeda444ca069e9417f7d96

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