Malicious PDF — malware analysis report

Static analysis result for SHA-256 2743022c849591d3…

MALICIOUS

PDF

78.9 KB Created: 2021-03-19 03:00:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d1dd64f62e1a22975c4614aaa9d84410 SHA-1: 7d41b6f45fb54c85a6477ad30423646e622260f0 SHA-256: 2743022c849591d3f4af87e450cd6dfde6a124aaa91dc6d51815e8b29a94a651
96 Risk Score

Malware Insights

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

The file is a PDF containing an embedded URL that redirects to a malicious domain, as indicated by the PDF_URI and EMBEDDED_URL heuristics. The ML classifier and ClamAV detection strongly suggest malicious intent. The presence of an external URI points towards a phishing or malware distribution attempt, likely using the document's title as a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://midufefew.ru/wix?keyword=chapter+22+plant+diversity+section+22-1+introduction+to+plants+answers
    • http://topchambre.xyz/brahman_naman_movienpaus.pdf
    • https://fodukajanewirom.weebly.com/uploads/1/3/5/3/135383911/06c4b6c58829f.pdf
    • https://lujetuzamuja.weebly.com/uploads/1/3/4/3/134372728/rawalobofatomow.pdf
    • https://cdn-cms.f-static.net/uploads/4446147/normal_60490f502d0dc.pdf
    • https://cdn-cms.f-static.net/uploads/4372955/normal_602c472d14f60.pdf
    • http://thelandofbadideas.com/tambourine_definition_francaishl8et.pdf
    • https://zodemabu.weebly.com/uploads/1/3/4/8/134896511/e2d8f586c.pdf
    • https://dinuboxisoxim.weebly.com/uploads/1/3/1/8/131857966/wusixa.pdf
    • https://dajadigab.weebly.com/uploads/1/3/2/7/132712332/zatis_zaroze.pdf
    • https://cdn-cms.f-static.net/uploads/4427097/normal_5fd189056f0d4.pdf
    • http://lynciguest.com/business_analyst_resume_formats8hqr1.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/6435a1a0-979b-43d1-9042-ac60d32c0aa2/rounding_numbers_worksheets_with_answers.pdf
    • http://sawokinajiralar.rf.gd/92192299410.pdf
    • http://xilutetixu.epizy.com/jokolabusululuxenaji.pdf
    • http://fepapasofefo.epizy.com/us_amendments_list.pdf
    • https://uploads.strikinglycdn.com/files/5dc515b0-4805-4eac-8637-526f09c1ac1c/fekaredivotasafopagafusaj.pdf
    • http://jumirasex.epizy.com/terraria_apk_androeed._ru.pdf
    • http://zuxekesimulir.epizy.com/adobe_portfolio_tutorial.pdf
    • http://kiwimusef.epizy.com/how_to_use_the_bissell_spot_clean_proheat.pdf
    • https://uploads.strikinglycdn.com/files/e563b092-eeb3-4507-9abe-3ca4b7fbe468/measure_up_in_life_quotes.pdf
    • https://uploads.strikinglycdn.com/files/69b2f62f-2a82-4200-bfa9-fa3d1ac8e4a1/wejidonazu.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_off0000f3e5.bin
b062d2d557c9ce27084db89a43362e3938349a48201b6128d564d1b79fc1a5ce
pdf-font-stream PDF embedded font (sfnt) at offset 0xF3E5 5536 bytes
font_01_sfnt_off000106d3.bin
de83ae40b877d1a8d8a4068bc79309816be7430bd454b56475f39dbfea9578a4
pdf-font-stream PDF embedded font (sfnt) at offset 0x106D3 10768 bytes