Malicious PDF — malware analysis report

Static analysis result for SHA-256 dffd7c7bfb09dbfa…

MALICIOUS

PDF

75.8 KB Created: 2021-04-07 22:53:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: bbfe8df28dea99adff2f5eab3d1e8ae2 SHA-1: 51d6d2cda1f131ddc883512fa418ddedc0d3476e SHA-256: dffd7c7bfb09dbfa36db8612e0ed025d734291f3435f98c013457c792b51162f
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://leonvi.ru/123?utm_term=amebiasis+hepatica+pdf PDF link annotation
    • http://wimuzawoxi.getenjoyment.net/beginner_s_guide_to_zero_inflated_models_with_r.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379982/normal_6063302cb63b7.pdfIn PDF document text
    • http://verezitabel.66ghz.com/business_card_templates_illustrator.pdfIn PDF document text
    • http://sadinexiwa.mygamesonline.org/sobunijanewefawakivosob.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365602/normal_5fdf6abb81573.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389384/normal_604ae512a3c87.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417406/normal_606a92fabdbfb.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/mejawiwomak/bhojpuri_bhakti_song_dj_remix_2019.pdfIn PDF document text
    • http://falariwupap.myartsonline.com/17848332553.pdfIn PDF document text
    • https://s3.amazonaws.com/rorives/how_to_clean_dyson_attachments.pdfIn PDF document text
    • https://s3.amazonaws.com/matogapibelifiv/88463675208.pdfIn PDF document text
    • https://s3.amazonaws.com/gonafoziguwewe/end_of_life_product_template.pdfIn PDF document text
    • https://s3.amazonaws.com/sevoga/76103349225.pdfIn PDF document text
    • https://s3.amazonaws.com/gedimuta/61485032484.pdfIn PDF document text
    • https://s3.amazonaws.com/wozowuledij/49212259348.pdfIn PDF document text
    • http://dijovomivuz.rf.gd/gikox.pdfIn PDF document text
    • https://s3.amazonaws.com/firigugixujotov/43472037743.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_off0000e835.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE835 5396 bytes
SHA-256: b65a5aaa9a45b3f9d1ecd0ed9c25048e14ff6e7e673c66fcda9ea126658daf18
font_01_sfnt_off0000fa68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA68 11852 bytes
SHA-256: 18f6c220abb1cb33b63f5861f4aaf97b99b5f0701fe4fbdf26136e24c740822b