Malicious PDF — malware analysis report

Static analysis result for SHA-256 222f3c903e596887…

MALICIOUS

PDF

67.3 KB Created: 2021-03-02 01:48:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 00dd47ad9f8637a02d1a7f1c980e8ac3 SHA-1: 60a8fe6497a960f05d380e828f4c071f4a4cc404 SHA-256: 222f3c903e59688779ea320de954cb17c39c07891bb72c06062dd19c90e3b44e
136 Risk Score

Malware Insights

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

The PDF contains a high-severity heuristic firing for a random URL link, pointing to 'http://cabinetshub.xyz/fakuwebosemetesavifirewilczgkq.pdf'. This URL is likely a lure to download a second-stage payload. ClamAV also detected this file as 'Pdf.Phishing.Trojan', further indicating malicious intent. The presence of embedded URLs and the ML classifier's high confidence score support the assessment of a phishing or malware distribution attempt.

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
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • 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/123?utm_term=jensen+awm965+replacement+remote PDF link annotation
    • http://zevewidojodot.mywebcommunity.org/rain_dial_plus_on_iphone.pdfIn PDF document text
    • http://1cats.space/rafojekufas037bn.pdfIn PDF document text
    • http://rimka.xyz/muramisanelemorami6fdc0.pdfIn PDF document text
    • http://xulubapatoso.scienceontheweb.net/chick_fil_a_honey_roasted_bbq_sauce_nutrition.pdfIn PDF document text
    • http://abistrans.ru/12136793118i43fb.pdfIn PDF document text
    • http://itwow.info/516232417892fghm.pdfIn PDF document text
    • http://nuxagoliwanep.22web.org/39563562111.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485322/normal_600e5f07f2b28.pdfIn PDF document text
    • http://cabinetshub.xyz/fakuwebosemetesavifirewilczgkq.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/fovezewi/70566462098.pdfIn PDF document text
    • http://melamepapate.rf.gd/31983587543.pdfIn PDF document text
    • https://s3.amazonaws.com/xiwevitox/toburowesivanudawivunax.pdfIn PDF document text
    • http://dogiwexor.myartsonline.com/50156778739.pdfIn PDF document text
    • https://s3.amazonaws.com/kudufigunabi/3101931070.pdfIn PDF document text
    • http://laxiruzeremifam.rf.gd/equations_with_fractions_and_distributive_property_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/kovibu/50709349263.pdfIn PDF document text
    • https://s3.amazonaws.com/viromibukoleliw/buffettology_mary_buffett.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_off0000c8af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC8AF 5592 bytes
SHA-256: 28afbf2f8b64c2e1a6b946ba7569e5ae37eb6c16b3a0f3fcb3fcf6ca74bfa0f0
font_01_sfnt_off0000dba9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBA9 10784 bytes
SHA-256: f81e869b8b6fb0bd4c31d4f94767597c1e85162cd5afb04f3efc521559ab839d

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