Malicious PDF — malware analysis report

Static analysis result for SHA-256 5fecd6ee9ec3b069…

MALICIOUS

PDF

78.6 KB Created: 2021-05-15 09:35:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: fb2a69cd17b14ac278c40ea5379a241b SHA-1: ed63d9528b4c783d623230ccf7e82e78c5da3acc SHA-256: 5fecd6ee9ec3b06945b2b2bbf8ef1157b7b0ff1d0083e0d8b4ca43b8dd34e7c7
156 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for PDF_SEO_LINK_FARM, indicating it is part of a link farm designed to drive traffic to external sites. The embedded URL points to a suspicious domain, suggesting a phishing or malicious redirection attempt. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://jumiwimov.ru/strik?utm_term=diaper+pail+that+uses+regular+garbage+bags PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4457620/normal_5fed4d8d43974.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471240/normal_604b0ac3eac1c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425921/normal_5ff89b6a2f899.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388067/normal_5fe694a60d4fd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369179/normal_5ff5e4c77fa3b.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/zowejunef/diary_of_a_wimpy_kid_5_full_movie.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b3d83cfe-9d72-4150-a7e2-053cfb362ce5/relupomigokonezorewux.pdfIn PDF document text
    • https://s3.amazonaws.com/xarojapi/forasizapoduwuteta.pdfIn PDF document text
    • https://s3.amazonaws.com/varoximu/68897547268.pdfIn PDF document text
    • https://s3.amazonaws.com/davolazupivowi/how_to_draw_comics_the_marvel_way_video.pdfIn PDF document text
    • https://c183b790-cb34-49aa-848e-1a9f2b14dda3.filesusr.com/ugd/d8966e_a20b6b689b0d437c9f7110a634f364cb.pdf?index=trueIn PDF document text
    • http://nifekubipaxo.epizy.com/adobe_brand_guidelines_2020.pdfIn PDF document text
    • http://logovejewuwofe.rf.gd/rafatowimezugod.pdfIn PDF document text
    • https://s3.amazonaws.com/nelizenejakarug/sylvia_plath_ariel_poem_meaning.pdfIn PDF document text
    • https://s3.amazonaws.com/jemisajoda/synonyms_and_antonyms_worksheet_1st_grade.pdfIn PDF document text
    • https://ec8c99fd-5413-4e38-b6a0-2ccbba71fc6f.filesusr.com/ugd/de02f3_98194feb34bd4cc1b21a824a8b006aed.pdf?index=trueIn PDF document text
    • https://569961a5-e6b5-462d-8b38-7193d5e7b20b.filesusr.com/ugd/a37a2e_9230158150ca4958a75766a6a5e0e142.pdf?index=trueIn PDF document text
    • http://lexodewujigunem.epizy.com/podawiroleximajem.pdfIn PDF document text
    • https://s3.amazonaws.com/gotenukevepunin/bupologinawapu.pdfIn PDF document text
    • https://s3.amazonaws.com/gixirojozogufux/arabian_nights_1974_full_movie_free.pdfIn PDF document text
    • https://9eaa565e-fb97-40b4-b096-d6760803f699.filesusr.com/ugd/55e2c6_2dd6427d9a5f4620b81a48f570a946fb.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/84f319f1-cc9a-4620-9dc6-5d4ad491a589/material_safety_data_sheet_form_philippines.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/76be2dec-8a72-4399-a029-a269c4f74a4f/reloading_bench_plans.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_off0000f819.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF819 5220 bytes
SHA-256: e049a58bbd9ed74c7e030ca18c0b7af6c0e38262684684015679e4551fcae477
font_01_sfnt_off000109d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109D2 10316 bytes
SHA-256: 2c0e356c9e53a2142c605c5d789e92c4f7453d134d3d3983a660509320f279a4

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