Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e74bc5a2bac7603…

MALICIOUS

PDF

78.5 KB Created: 2021-03-14 12:18:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 024400ec6013e8ec203f56001be494a6 SHA-1: 3b40a1249b4cf22954296aab421ea0e98bf97c0a SHA-256: 7e74bc5a2bac7603d3b76a36d3476d293a9f15305aad0d4f3c4c114a78ef73e6
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, with a significant number pointing to potentially malicious domains, indicative of a link farm or phishing lure. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded links suggest it's designed to redirect users to malicious websites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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/award?keyword=pieces+de+la+maison+pdf PDF link annotation
    • https://nozusetemakofam.weebly.com/uploads/1/3/1/4/131408546/zewetarakipefumet.pdfIn PDF document text
    • http://bupatinewesep.66ghz.com/puwaximu.pdfIn PDF document text
    • http://bomepufibawil.scienceontheweb.net/kilupipov.pdfIn PDF document text
    • https://totijavefukaja.weebly.com/uploads/1/3/4/7/134705726/3957795.pdfIn PDF document text
    • http://nibakelenixezas.getenjoyment.net/38886515601.pdfIn PDF document text
    • http://rilomenininun.getenjoyment.net/list_of_irregular_adjectives_in_english.pdfIn PDF document text
    • https://watagejikifawup.weebly.com/uploads/1/3/4/5/134589749/d464609de.pdfIn PDF document text
    • https://nametipij.weebly.com/uploads/1/3/1/1/131164318/mekabetofovire_valawideba_giruzepipa_nomegenuviros.pdfIn PDF document text
    • https://zoxopabetil.weebly.com/uploads/1/3/1/1/131163737/zonefix.pdfIn PDF document text
    • https://finamiwowekizo.weebly.com/uploads/1/3/2/3/132302732/6910305.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/musoxifuvitalo/xuvawovodomasevepejevo.pdfIn PDF document text
    • https://s3.amazonaws.com/ditiruz/rca_vhs_camcorder_battery.pdfIn PDF document text
    • https://cd753cf5-d90a-4073-9c55-931a76e81761.filesusr.com/ugd/8826df_06f441d945894ad1b021dfa6fe747981.pdf?index=trueIn PDF document text
    • https://1350f94c-8d6f-42b4-8351-24983ad6a49a.filesusr.com/ugd/4aae87_51192b47e3bc42ee9cdcde84375e2dec.pdf?index=trueIn PDF document text
    • https://5e54824a-8208-41b0-8aeb-7c017e8cfb46.filesusr.com/ugd/f64db8_1edfa22721e14b20b743528ea53d0701.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xezujuxoz/96912755925.pdfIn PDF document text
    • https://s3.amazonaws.com/dusubonifu/lidijepararamisaka.pdfIn PDF document text
    • http://bipitor.epizy.com/codility_answers_python.pdfIn PDF document text
    • https://s3.amazonaws.com/retisovojor/bangla_funny_picture_hd.pdfIn PDF document text
    • https://0eb00d84-361a-45dc-b346-1af5c8eb785c.filesusr.com/ugd/d79848_7d912e7815a042c38e81a699c6ea877a.pdf?index=trueIn 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_off0000e6e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6E1 4912 bytes
SHA-256: a4038e998d8b6be4c008840e88718a99e35f437d4e593ae41510a39c36d18db3
font_01_sfnt_off0000f770.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF770 12660 bytes
SHA-256: be723e8ab14d544dc51f955cee2b79b6111728e1157318a86aec8dd50cf3a8e8
font_02_sfnt_off00011f01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F01 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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