Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9129dcc3fca97db…

MALICIOUS

PDF

70.9 KB Created: 2020-11-23 22:45:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: dc124a1b31440210eb07d20f8d80714a SHA-1: 09358795895e5afbb6b0eac07824be4865a41963 SHA-256: e9129dcc3fca97dbf096bf2b819315c3220a4d4fd66940b6126a9d30f13dda43
96 Risk Score

Malware Insights

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

The PDF file contains embedded URLs and is flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The document body, though heavily obfuscated, contains text related to a butterfly caterpillar, likely a lure to direct the user to the malicious URL. The presence of embedded URLs and the phishing detection strongly suggest a phishing attack vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://trafffi.ru/123?utm_term=common+buckeye+butterfly+caterpillar PDF link annotation
    • https://xukaxikerebata.weebly.com/uploads/1/3/4/0/134042698/tifiwepaximewuk-mexifusiji-kezavabitexemik-towinepina.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459482/normal_5fa34aa0e634a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390371/normal_5f969989ae209.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366327/normal_5fac17538bd46.pdfIn PDF document text
    • https://jawowigo.weebly.com/uploads/1/3/0/7/130774982/6615122.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4492536/normal_5fb7c797071bd.pdfIn PDF document text
    • https://tivakuwisol.weebly.com/uploads/1/3/4/3/134315960/3036417.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384050/normal_5fb2d9cbe9c33.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/viboxikuz/65455149594.pdfIn PDF document text
    • https://s3.amazonaws.com/pisik/36528114779.pdfIn PDF document text
    • https://s3.amazonaws.com/legenapi/89378004409.pdfIn PDF document text
    • https://s3.amazonaws.com/sukedil/rixisumexofe.pdfIn PDF document text
    • https://s3.amazonaws.com/zomuzigo/sodabozatasinopipanogan.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/rockford_fosgate_prime_r500x1d_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/fejenijovekozu/meeting_of_the_minds_2019_orange_county.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_off0000d832.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD832 5192 bytes
SHA-256: 686f052dc682f796b6d49a5fd24becdabdd4737828913b742e54cb5f04790acd
font_01_sfnt_off0000e9d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9D7 10376 bytes
SHA-256: d42d0eed59737f78802f9540e7512dfb3b1de1cd0347820e33c1708a657a0c31

Open this report in the interactive analyzer, or submit your own file for analysis.