Malicious PDF — malware analysis report

Static analysis result for SHA-256 64dbe0bbb9e40657…

MALICIOUS

PDF

90.6 KB Created: 2021-01-05 19:32:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: c2ba6818ec0da4722961cbb8a3518ac5 SHA-1: a64e3a46ef862ecaf0c822009db83440e1f86840 SHA-256: 64dbe0bbb9e4065768623ae4d2ad67bfc6c1230d971365d7e97f4cf0ad6f5513
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, indicating malicious intent. It contains a large number of external links, suggesting a link farm or phishing attempt. The embedded URLs likely lead to further malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://trafffi.ru/aws?utm_term=responsive+parallax+html+template+free PDF link annotation
    • https://kawuloxegulul.weebly.com/uploads/1/3/4/3/134389306/7116664.pdfIn PDF document text
    • https://mujetuzavos.weebly.com/uploads/1/3/4/2/134266282/wulibilufosewaf.pdfIn PDF document text
    • https://tejigenunonim.weebly.com/uploads/1/3/0/8/130813632/diwutebugabajip.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373511/normal_5fe1c4123c401.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/fe974379-34cf-4898-864d-ec7bc4863294/64957091559.pdfIn PDF document text
    • https://s3.amazonaws.com/pafiganovavi/cds_2019_english_paper.pdfIn PDF document text
    • https://s3.amazonaws.com/dazifozixawus/los_bandoleros_tamil_full_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/pipaneku/niwoborawagulifuzapex.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ffcf0b2e-ac35-4fd9-9cd2-71e751048d4c/78206734053.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8a4140a7-c589-4ae2-a07e-d3a5240bc918/bibaroxajitibexonefu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/00960f9a-6583-4f4d-b8b8-50f445c205e6/vegetable_chopper_manual_online_shopping.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c0acc152-d841-47d1-9dd6-e1fefe21343d/78094666919.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_off000127c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x127C7 5276 bytes
SHA-256: 1d3ddd5995244d8d4b6c1e85143ed586e11e45b74a03e1e853b86a63f210a279
font_01_sfnt_off00013999.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13999 10488 bytes
SHA-256: f34fa0eae94e17c012f638178ea2b318a16c3933d3f3052d248d3670b71ec2b6

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