Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b7a379921c65bfd…

MALICIOUS

PDF

80.9 KB Created: 2021-03-03 20:40:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 01a063db4bde0a734574fd397368f10d SHA-1: 701eb69b6362ed8bbe2230924b977dee672dc08b SHA-256: 9b7a379921c65bfdd9b220cf987b6804df618fb01b242539b52cd89516fed15c
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The document body, though partially corrupted, suggests a lure related to refrigerator repair, likely to trick users into clicking the embedded malicious URL. The embedded URL leads to a domain associated with phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://botokaw.ru/strik?utm_term=how+to+repair+godrej+refrigerator+not+cooling
    • https://static.s123-cdn-static.com/uploads/4473388/normal_6009a2d8a9c20.pdf
    • http://kanotisutujag.iblogger.org/ringtone_band_baja.pdf
    • http://rasudilikid.mywebcommunity.org/beauty_and_the_beast_vocal_sheet_music.pdf
    • https://zokevuwokonumez.weebly.com/uploads/1/3/4/6/134682223/sebigokavo.pdf
    • http://bometaximom.scienceontheweb.net/42409936808.pdf
    • https://cdn-cms.f-static.net/uploads/4465142/normal_603b6ba7f3fdc.pdf
    • https://cdn-cms.f-static.net/uploads/4454306/normal_601b704a9658c.pdf
    • http://xipukob.22web.org/how_to_calculate_mass_flow_rate_of_steam.pdf
    • https://static.s123-cdn-static.com/uploads/4481820/normal_5fdef6c5854d5.pdf
    • http://numulul.mygamesonline.org/anne_balsamo_technologies_of_the_gendered_body.pdf
    • https://cdn-cms.f-static.net/uploads/4370074/normal_602202b673767.pdf
    • https://static.s123-cdn-static.com/uploads/4449178/normal_5fff7f779cec3.pdf
    • https://static.s123-cdn-static.com/uploads/4417530/normal_5febbeaeac5a1.pdf
    • http://xuwuvewisin.mypressonline.com/65147667065.pdf
    • https://cdn-cms.f-static.net/uploads/4491164/normal_6017245797881.pdf
    • http://nafarami.medianewsonline.com/92252836175.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://kuzemepusiloj.onlinewebshop.net/html_style_link_href.pdf
    • http://riwugenesujo.epizy.com/a_level_economics_notes.pdf
    • http://kilarosine.atwebpages.com/sonoma_county_transit_route_map.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fea1.bin
967f8da47ba8b5a68f358b0784f70980344e5b3d90bf04440d23ec2be0d3e248
pdf-font-stream PDF embedded font (sfnt) at offset 0xFEA1 5276 bytes
font_01_sfnt_off000110bd.bin
c927f1eaac3a5cc469de27a630049db2319a54d4ff81e8d916bdeadc44884606
pdf-font-stream PDF embedded font (sfnt) at offset 0x110BD 11108 bytes