Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee1061dfd694bf9d…

MALICIOUS

PDF

74.9 KB Created: 2021-05-04 13:01:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 10670eed0a629115fe1be85c435eb4b7 SHA-1: a436fc9411477ceb982b8405af738213fb618e9c SHA-256: ee1061dfd694bf9d970e3d4273f4fc5064c9ea7b4191db19597363bd35dc0869
96 Risk Score

Malware Insights

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

The PDF file contains a lure related to cleaning a humidifier, which directs the user to a suspicious URL. This URL is likely intended to host a malicious payload or phishing content. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://xezojetit.ru/strik?utm_term=how+to+clean+the+air+o+swiss+humidifier
    • https://cdn.sqhk.co/dibitarebizu/yhCaEgg/50055121086.pdf
    • https://static.s123-cdn-static.com/uploads/4421365/normal_60068023a65bf.pdf
    • https://cdn.sqhk.co/lijuwezasip/jCij6if/dog_ball_pit_amazon.pdf
    • http://fejiximodanu.mygamesonline.org/bbc_compacta_class_11_english_answers.pdf
    • https://cdn.sqhk.co/baxoladipezu/tgdihYZ/nopiw.pdf
    • https://static.s123-cdn-static.com/uploads/4369656/normal_5ffa4ef54c9bc.pdf
    • https://cdn.sqhk.co/parabeset/Xhggijc/was_operation_market_garden_a_total_failure.pdf
    • https://static.s123-cdn-static.com/uploads/4487916/normal_5fcc8d3e9cd42.pdf
    • http://dafitunexen.iblogger.org/angular_tutorial_for_beginners.pdf
    • http://gikafowezogupij.mywebcommunity.org/abecedario_en_frances.pdf
    • http://vobafoselalulor.mypressonline.com/34754720443.pdf
    • https://static.s123-cdn-static.com/uploads/4451766/normal_5ff784413411c.pdf
    • http://wivuperafuzo.mypressonline.com/the_farlex_grammar_book_complete_english_grammar_rules.pdf
    • http://firejifanop.iblogger.org/fudekutagumatirisem.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://xisomifufob.epizy.com/organon_aristoteles.pdf
    • http://fukogalijikufoz.epizy.com/barreiras_da_comunicao.pdf
    • https://s3.amazonaws.com/muvevanepen/beko_odf22300x_electric_double_oven_manual.pdf
    • http://firumod.epizy.com/78048418338.pdf
    • https://s3.amazonaws.com/bogijexu/juwevenupamin.pdf
    • http://veselawo.rf.gd/fixuvuxuvagexivegapabe.pdf
    • http://riledabetime.myartsonline.com/tamil_alphabet_in_english.pdf
    • http://wizebefekeb.epizy.com/26548325180.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_off0000e785.bin
8601e4d1d2e029ce07275195ab3accaddf568adfd8f50fdca97562a8a01bdacc
pdf-font-stream PDF embedded font (sfnt) at offset 0xE785 5316 bytes
font_01_sfnt_off0000f97a.bin
8a23666d5e9501639050c0401b3b8d03bad52ea2d62db43a9796d3e65ac5d35e
pdf-font-stream PDF embedded font (sfnt) at offset 0xF97A 10704 bytes