Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3b8f64e798077de…

MALICIOUS

PDF

58.7 KB Created: 2020-11-14 19:28:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 60745c1b7fba6f12494855c5ab57b1d3 SHA-1: df29555a9dbf495512f08c112b9c1cfa00839bc5 SHA-256: e3b8f64e798077dee2355d408ed24722bad3a5ab6a0237678915880ff6ffd744
96 Risk Score
Tags
free-cdn-ebook-manual-lure

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 URI pointing to 'traffking.ru', which is likely a phishing or malware distribution site. The document body, though heavily obfuscated, suggests a pretext related to legal records, aiming to trick the user into visiting the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9917

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://traffking.ru/123?utm_term=declaration+of+custodian+of+records PDF link annotation
    • https://juzatimeb.weebly.com/uploads/1/3/4/6/134605854/1343268.pdfIn PDF document text
    • https://jipemovikeral.weebly.com/uploads/1/3/4/0/134012889/71c4304.pdfIn PDF document text
    • https://renupipa.weebly.com/uploads/1/3/4/3/134383378/af10f.pdfIn PDF document text
    • https://mebogizudoredo.weebly.com/uploads/1/3/4/4/134472702/mujokegulapilu.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/gupuso/89112592979.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/295443ba-9949-45bd-a6ac-4f0a57b90be3/40385277326.pdfIn PDF document text
    • https://s3.amazonaws.com/zonebon/amino_acids_are_joined_by_ribosomes_to_make.pdfIn PDF document text
    • https://s3.amazonaws.com/farowug/chrysler_airtemp_furnace_manual.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_off0000aba4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xABA4 5012 bytes
SHA-256: cd2d37ca5a9e516374467d3ee8406d18a3edf1a6bd5a85159200b3822f0d404f
font_01_sfnt_off0000bcc4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBCC4 9832 bytes
SHA-256: 114029afee405d033ed701763a17d33f72c50754677532e73579a9439abb2894

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