Malicious PDF — malware analysis report

Static analysis result for SHA-256 5703719229973546…

MALICIOUS

PDF

88.0 KB Created: 2021-04-30 01:58:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: befb3e44f847d0b09d0f5606820f25a5 SHA-1: 82a3f9e373e0c8bd313a1dd7411ba38d82add7c5 SHA-256: 5703719229973546f2af8e21b3dbca5771a655a9d432dc2c80ef8c3ee0946800
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 0.9958

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://resalured.ru/strik?utm_term=how+to+lose+weight+fast+diet+plan PDF link annotation
    • http://karma-911.com/what_is_composition_in_photography_and_why_is_it_importanttsyk7.pdfIn PDF document text
    • http://barajofa.mywebcommunity.org/10741500432.pdfIn PDF document text
    • http://luxomozuk.mypressonline.com/how_to_get_mp3_on_iphone_11.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4505159/normal_5ff078a541388.pdfIn PDF document text
    • https://dedopaka.weebly.com/uploads/1/3/4/4/134498192/4123396.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448984/normal_606505a16f461.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4457563/normal_5ff828f23e582.pdfIn PDF document text
    • http://aduo5.online/5g_mobile_and_wireless_communication_technologynkb57.pdfIn PDF document text
    • http://lojapidabud.mypressonline.com/rachmaninoff_vocalise_violin.pdfIn PDF document text
    • http://redofokotab.sportsontheweb.net/varomawukowogirut.pdfIn PDF document text
    • http://amst-watch-v1.club/kegujogokuzegofavibutufhqul.pdfIn PDF document text
    • https://nexawukuvinu.weebly.com/uploads/1/3/4/5/134578226/zurex.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4472185/normal_6009855b0cc76.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370529/normal_6060e3b2e5e01.pdfIn PDF document text
    • http://vnds-super.space/145431940poq0d.pdfIn PDF document text
    • http://zoneeuro.pro/caracteristicas_de_la_familia_apiaceaehto39.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/potofaw/ledudalusivavizaxulunidu.pdfIn PDF document text
    • https://s3.amazonaws.com/xulepiwa/27554019863.pdfIn PDF document text
    • https://s3.amazonaws.com/wutezigojuxi/foxawujamuvuperag.pdfIn PDF document text
    • https://s3.amazonaws.com/solonebosop/53783548658.pdfIn PDF document text
    • https://s3.amazonaws.com/mokuwanibof/android_high_cpu_usage_idle.pdfIn PDF document text
    • https://s3.amazonaws.com/salosibejodod/how_to_re_pair_lg_soundbar_with_subwoofer.pdfIn PDF document text
    • https://s3.amazonaws.com/vabemavuputenif/agilent_gc_7890b_user_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/varolexexus/32694848768.pdfIn PDF document text
    • https://s3.amazonaws.com/sifawekujiki/best_android_smart_tv_malaysia.pdfIn PDF document text
    • https://s3.amazonaws.com/zerepuzuze/design_a_crown_worksheet.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_off0001197e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1197E 5260 bytes
SHA-256: 1e9587389e5bb7637e621f767f26c8553fdcdd9f2cc8bbac1279179baf0dc604
font_01_sfnt_off00012b77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B77 11272 bytes
SHA-256: fb6653499ffb8f4223e4691b2422d4030dc2cf28009b0d24d037c3e405d06d3c

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