Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b99e30e62921957…

MALICIOUS

PDF

71.4 KB Created: 2021-01-11 22:58:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 7efeb60054e41a3c2306998ba9836bee SHA-1: 5198a25ade4cafe2f5779d8bdfde88fb3a03c3d0 SHA-256: 7b99e30e629219573d6ba02584e2dd96c7f214f3a16972e3b97f4bc22c11c773
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 as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'traffking.ru', which is likely part of a phishing or redirection scheme. The document body, though heavily obfuscated, appears to contain metadata related to search terms, suggesting a lure to a malicious website.

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://traffking.ru/aws?utm_term=chiari+malformation+surgery+australia PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4424361/normal_5fbb8a165a0f5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4494888/normal_5fdda5334e52d.pdfIn PDF document text
    • https://site-1173293.mozfiles.com/files/1173293/14990533191.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372072/normal_5f9227301d6e3.pdfIn PDF document text
    • https://site-1177759.mozfiles.com/files/1177759/fafole.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365541/normal_5f8b192818fe6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484834/normal_5fd1f42543fc2.pdfIn PDF document text
    • https://site-1171522.mozfiles.com/files/1171522/26774010319.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420237/normal_5ff408761538e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374519/normal_5fac12e5a2380.pdfIn PDF document text
    • https://site-1174433.mozfiles.com/files/1174433/space_rangers_2017.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490274/normal_5fc1678224084.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366632/normal_5f877c250a2ab.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/xulepiwa/88926720796.pdfIn PDF document text
    • https://s3.amazonaws.com/redegelesibif/37988281887.pdfIn PDF document text
    • https://s3.amazonaws.com/gaxuremewuger/amc_10_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/wotodedaruzuk/juvawimemotaruwuduro.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dbad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBAD 5188 bytes
SHA-256: 4beeb6c650ef6a5016785b0a8d795bcc6d0e78be260cf716c7999e3ad03828ae
font_01_sfnt_off0000ed30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED30 10220 bytes
SHA-256: 5198a6ccdaf5194b0907772c18f4b608cde13ce18e1accf1e6583a0186309738

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