Malicious PDF — malware analysis report

Static analysis result for SHA-256 dfddc3f87f070bc7…

MALICIOUS

PDF

77.2 KB Created: 2021-02-07 07:52:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-07
MD5: 471eb7ebd0d3a34d9fc7adc12c4ed5f4 SHA-1: 4f7d06c4f32d3d59b673a74385ad709a48e17c43 SHA-256: dfddc3f87f070bc735d51af2d5252c4632ba56e9c9d25aaebc34fe3ed656fa8a
96 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. The document contains an embedded URL that, when visited, likely leads to a phishing or malware download site. The presence of the URL and the overall classification strongly suggest a phishing attack vector.

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://bologen.ru/aws?utm_term=baldur%2527+s+gate+solo+sorcerer+guide PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4483103/normal_5fcb1fc87678c.pdfIn PDF document text
    • http://bbflowers.net/primalcraft_cubes_craft_and_survive_gameesy7o.pdfIn PDF document text
    • http://cheapestshop.xyz/bibi_fatima_ka_mojzasyc4o.pdfIn PDF document text
    • http://bonboxstudio.com/178405737087i6vh.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452846/normal_600547ade7cfb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408463/normal_5fed3e55a6877.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389084/normal_6009a1c95fb2a.pdfIn PDF document text
    • http://rivuxini.66ghz.com/59147258607.pdfIn PDF document text
    • http://topplafond.xyz/belichick_record_against_former_assistantsjibjg.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490125/normal_6019792d5dd83.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479433/normal_601603597c84b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4494668/normal_6007905d75077.pdfIn PDF document text
    • http://dektesheff.xyz/zakufijutextmev3.pdfIn PDF document text
    • http://logorag.22web.org/fulun.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dutagewenurodub.epizy.com/nuxewexogetebamemeram.pdfIn PDF document text
    • http://fezivepe.rf.gd/xatuvevojezexe.pdfIn PDF document text
    • http://ponenasese.epizy.com/wuvufobakex.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_off0000ef32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF32 5192 bytes
SHA-256: ff7ead19128dd2e1988443951cedd6bd6adf28f26371c096539e62052c2db1d1
font_01_sfnt_off000100ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100ED 11592 bytes
SHA-256: daca539851d76db872615ca61785791241aa4f539ce44a133bf69930eef2dca5