Malicious PDF — malware analysis report

Static analysis result for SHA-256 56bd7fe1502599ee…

MALICIOUS

PDF

77.1 KB Created: 2021-05-23 08:23:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 0fb158d4be99478f0552dbf339aeb783 SHA-1: 2fd4fe701a04257e50d862a3e80cb2ebfa08875c SHA-256: 56bd7fe1502599ee39485423175c451d05749b91a0393018a3df57984f463336
196 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a ML classifier and ClamAV, indicating a high likelihood of malicious intent. The 'SE_PAYMENT_REDIRECT_LURE' heuristic suggests the document attempts to trick users with fake financial instructions. The presence of numerous external links, including one to 'ponafet.ru', further supports a phishing or redirection attack pattern. No scripts were extracted, but the PDF structure itself is used to host these malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise 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://ponafet.ru/strik?utm_term=how+to+scan+lottery+tickets+florida PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4375503/normal_5fdbdb7439a6a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368245/normal_5fc7d2f8caa0c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379854/normal_60309d214b398.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372696/normal_60186cc72b36a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481053/normal_6029cdbcac7a8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408594/normal_603b6f28f1ad2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463529/normal_601bcd3c1c857.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4492901/normal_5fea133990d1f.pdfIn PDF document text
    • https://farisogu.weebly.com/uploads/1/3/4/3/134307724/lefurujerezobi_labobopinu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409243/normal_5fc8c8ef45771.pdfIn PDF document text
    • https://badasemo.weebly.com/uploads/1/3/4/4/134482086/3048537.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376599/normal_60324ad619e77.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415770/normal_605d836f1b609.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385863/normal_5fceea34879c7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451753/normal_5fe13eb9be7f6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4477637/normal_5ffef973212a2.pdfIn PDF document text
    • https://weziriditovi.weebly.com/uploads/1/3/4/1/134108838/6956978.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/c8611efd-b4d7-4ac0-bdab-35db3942470d/what_does_no_monkey_business_mean.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ca6abbc9-ae0f-4edd-b9c3-7bbe58b4e69f/tulikekiroluzebina.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/580b904c-598b-4276-a455-d3022669c280/98452150504.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/73e48009-5ade-463b-bf32-115df633c1b7/81796283307.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/57f68948-db38-4cee-9278-16862c7bbba6/18750156911.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_off0000ed23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED23 5236 bytes
SHA-256: 3ff1e73cd4c308200b13f238b235bcf2708977093426e5e78aa117a5176033a4
font_01_sfnt_off0000ff1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF1B 11124 bytes
SHA-256: ed921c9713c0c2fc04b2d366df1f92886b716716e0ea1ff07208736678df813c

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