Malicious PDF — malware analysis report

Static analysis result for SHA-256 bdb102392561cdbf…

MALICIOUS

PDF

180.1 KB Created: 2021-01-15 05:22:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-03
MD5: b38cada8ffd8af3a9c93b2b8b90d829b SHA-1: 7ea999a827ba09731e4d248b9b222d5acf7bdfab SHA-256: bdb102392561cdbf835973a0fa0a9f3b33df9fb69e6bc3a7590a13b269f5fa15
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL pointing to 'trafftec.ru', which is likely part of the phishing lure. The document body, though heavily obfuscated, suggests a deceptive title related to a 'parent's guide', aligning with common social engineering tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

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://trafftec.ru/aws?utm_term=into+the+inferno+parents+guide PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4407066/normal_5f9d1315721d4.pdfIn PDF document text
    • https://cdn.sqhk.co/tevosenijosu/hdgfigY/rajoduduwon.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408462/normal_5fad8b6314844.pdfIn PDF document text
    • https://xuvakaxatal.weebly.com/uploads/1/3/1/0/131070170/bolelapazuto.pdfIn PDF document text
    • https://femobideja.weebly.com/uploads/1/3/4/7/134735935/9b324.pdfIn PDF document text
    • https://gokipeko.weebly.com/uploads/1/3/4/3/134351508/e620909d72988d1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4443326/normal_5fc9d5e734ebf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392220/normal_5fd18c895ec79.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427783/normal_5fa915240cb0d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460070/normal_5fcef8475243d.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/farefasejikap/bossa_nova_songbook.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00022204.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x22204 38524 bytes
SHA-256: 5ec856867ce16be096093a6bd20f5dda144597b20a77b368b501308ba03aaba1
font_01_sfnt_off00028ab3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x28AB3 5208 bytes
SHA-256: ef2bf362b7d37bdde741d79f6ab1498a7d652f2013792fcdf172f2c2ae77c7f9
font_02_sfnt_off00029c65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x29C65 11280 bytes
SHA-256: 84b48b54ccda5421b4fcf20e044f08f4051e4b95ca5a09daff4453ed6bac1211