Malicious PDF — malware analysis report

Static analysis result for SHA-256 38453bea45457745…

MALICIOUS

PDF

72.9 KB Created: 2020-12-30 15:45:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: ba7d3dadf5166bb3d304a09b4f280c5d SHA-1: ebe9b5ea9be0447a519be85145f19f3c16d23b67 SHA-256: 38453bea45457745a8cfc10135b40b18d66744c0b1cdca1c00a847ad7c646b2a
214 Risk Score

Malware Insights

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

This PDF file was identified as malicious by multiple heuristics and a machine learning classifier. It contains a link farm designed to redirect users to malicious infrastructure, specifically identified by the URL 'https://traffking.ru/strik?utm_term=bridge+constructor+iphone+free+download'. The document's content and structure suggest a phishing or scam attempt, masquerading as a free download to entice clicks on malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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 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.
  • 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://traffking.ru/strik?utm_term=bridge+constructor+iphone+free+download In PDF document text
    • https://cdn.sqhk.co/tipefimex/FibdM3U/dogfight_2_hacked.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415767/normal_5f998a7fb72c2.pdfIn PDF document text
    • https://munulibur.weebly.com/uploads/1/3/4/5/134508804/domoxij_femorukod_kuxazajesejewok_wutawomejoxa.pdfIn PDF document text
    • https://cdn.sqhk.co/vagekoxes/H335Ggd/she_hit_it_hard_meaning.pdfIn PDF document text
    • https://cdn.sqhk.co/lupejatuwi/cxiaOjc/netflix_vr_apk_ios_13._3.pdfIn 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/3880a12e-d00f-44d6-b660-493294c2df13/2013_chevy_silverado_user_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/be0871f6-7377-495c-bb3c-3219b7e82be3/carnival_cruise._com_login.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aba6ed84-876d-43c2-a7f1-39468ef33890/95487924436.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2c47deed-4bee-40a5-82fc-0108398e78c9/currency_exchange_denver_airport.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9ab8f34f-6bb0-4d50-9b47-b71e2aa9ece2/ratezawubozetabomunekono.pdfIn PDF document text
    • https://s3.amazonaws.com/petubapizo/castlevania_netflix_parents_guide.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d38a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD38A 5556 bytes
SHA-256: 258e4cdc2ec6f4493c63cb591f6cf3b0341d4f3896c2c67267d8e0bcbf8720a6
font_01_sfnt_off0000e67e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE67E 4284 bytes
SHA-256: 97ed5ae0bcdfc4f3848e1636c4da95c86045faf87e7c7035610163f6455c0058
font_02_sfnt_off0000f203.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF203 10564 bytes
SHA-256: e061d1e1f46174e3f2d3df04d7101dd3f82f2cea764f55a1b1d55115101ce37e

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