Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e97e930673f88a4…

MALICIOUS

PDF

71.5 KB Created: 2020-12-27 17:15:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: dcadcf3e2e19c0c883f967f1e25b5277 SHA-1: 14f031e9d4e1a783688c8aae2bf2dc5998a119bc SHA-256: 0e97e930673f88a4b9f102dc2ce5488f127849b77c3ee58dc4c5cd3d3bfa6088
156 Risk Score

Malware Insights

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

This PDF file exhibits malicious characteristics, including a large number of external links, some of which are associated with phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. The embedded links, such as 'https://trafficel.ru/strik?utm_term=discounts+at+walmart+vision+center+insurance+accepted', likely serve as lures to direct users to malicious sites or to download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://trafficel.ru/strik?utm_term=discounts+at+walmart+vision+center+insurance+accepted PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4365634/normal_5fe27081c2985.pdfIn PDF document text
    • https://ziwagunu.weebly.com/uploads/1/3/4/8/134883986/6599181.pdfIn PDF document text
    • https://masugofesobix.weebly.com/uploads/1/3/4/6/134656422/3729109.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/febopa/seton_latin_answer_key.pdfIn PDF document text
    • https://s3.amazonaws.com/wajufifenoxuj/average_centipawn_loss.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1c293f3c-5da6-4f76-a70a-49dd5af68af6/7396512593.pdfIn PDF document text
    • https://s3.amazonaws.com/bomupi/68500936334.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee08f04b-0dbc-4e69-a51e-6f782edeaf0e/vasobolajorobafagodes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/16e52718-30aa-4fb0-9d3c-a8bdde77137b/petrochemical_engineering_salary.pdfIn PDF document text
    • https://s3.amazonaws.com/wizedumi/makijapurefosexoja.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d82a81ad-5dd8-4482-9eff-b8d15c283807/voxabeze.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_off0000d918.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD918 5372 bytes
SHA-256: a1d291819e70f96f3e1bd113943b205772b4948635cc6d34d7375ca91a2657f5
font_01_sfnt_off0000eb65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB65 11052 bytes
SHA-256: 102aa214ff41322ddb3af789660d5b8123144d626cacaf8ef971eab21dc8ea8c

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