Malicious PDF — malware analysis report

Static analysis result for SHA-256 aad44be60c5b6bf2…

MALICIOUS

PDF

65.9 KB Created: 2021-03-18 09:08:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 30fd74ffd5de87e35f54e0f0045a8aa9 SHA-1: 17df327a22bd47f7f7cb084c83b8dd740ca59a69 SHA-256: aad44be60c5b6bf2f0a83939f4baf8f3d24a09b03ab73a83122bc06f0f2e7eb4
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier. It contains an embedded URL pointing to 'zajinet.ru', which is likely part of a phishing or scam campaign. The document body, though heavily obfuscated, appears to be a lure related to 'Dyson dc59 parts uk'. No scripts were extracted, but the presence of external URIs and the overall detection suggest a phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://zajinet.ru/strik?utm_term=dyson+dc59+parts+uk
    • https://static.s123-cdn-static.com/uploads/4484376/normal_60076e9daccff.pdf
    • https://cdn-cms.f-static.net/uploads/4427793/normal_604e5a5fda705.pdf
    • https://static.s123-cdn-static.com/uploads/4492529/normal_600631502134d.pdf
    • http://fexevewuli.mypressonline.com/social_history_of_art_arnold_hauser.pdf
    • https://cdn-cms.f-static.net/uploads/4375528/normal_6017b2c925b99.pdf
    • http://repochka.site/logarithmic_functions_worksheettl52w.pdf
    • http://business-open.online/how_to_write_a_descriptive_paragraph_about_an_eventkt1fh.pdf
    • http://natnat.fun/cateye_micro_wireless_cc-vt100w_manuali8xf9.pdf
    • https://static.s123-cdn-static.com/uploads/4376870/normal_5fcdb2ba267a0.pdf
    • https://static.s123-cdn-static.com/uploads/4476146/normal_60093782f1a4a.pdf
    • https://cdn-cms.f-static.net/uploads/4423750/normal_602d5fe0a840d.pdf
    • http://lg-copyright.com/xirenujudopiwuzobosujesejruob.pdf
    • http://waliwosodumobu.iblogger.org/17112041165.pdf
    • http://kajipim.mypressonline.com/indian_dinner_menu_list_non_veg.pdf
    • https://cdn-cms.f-static.net/uploads/4450040/normal_604ed0de1583f.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/jenagubadopi/dabipitor.pdf
    • https://s3.amazonaws.com/jarirotexab/bumetezixe.pdf
    • http://mivuturirem.rf.gd/kulikanavegew.pdf
    • https://s3.amazonaws.com/lewuli/wulot.pdf
    • https://s3.amazonaws.com/fokapikow/mupofevefetife.pdf
    • http://fobadosox.epizy.com/majumigabijivivada.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_off0000c516.bin
ccae96838a8ca4afc8961dad650bfb661838cb670567cc6101b126157bda0dc1
pdf-font-stream PDF embedded font (sfnt) at offset 0xC516 5480 bytes
font_01_sfnt_off0000d7dc.bin
1163fbcd3675a4836b3b912284e452f4fc229e08a4852e003310c79f4a9ddeb1
pdf-font-stream PDF embedded font (sfnt) at offset 0xD7DC 10192 bytes