Malicious PDF — malware analysis report

Static analysis result for SHA-256 0410c2c5cfdddc54…

MALICIOUS

PDF

69.3 KB Created: 2020-12-13 23:49:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 73a014b1cb6cad2b036b47f473c776cb SHA-1: 744b521bf23196e0bc5c6476ea30138c99ebfdf0 SHA-256: 0410c2c5cfdddc542a1fb744d5b8eb2c3a4ad69e4b355f972ef5f184daf6e0fa
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified as a 'PDF_SEO_LINK_FARM' heuristic, suggesting an attempt to manipulate search engine results or redirect users to malicious content. The presence of an embedded URL and the ML classifier's high confidence score further support its malicious nature. No scripts were extracted, but the overall structure points to a phishing or content-luring attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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/wb?keyword=understanding%20life%20science%20grade%2012%20pdf PDF link annotation
    • https://sajipetifejej.weebly.com/uploads/1/3/4/8/134883768/4820461.pdfIn PDF document text
    • https://noremovex.weebly.com/uploads/1/3/4/8/134883944/5acd463.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/rafiralexezol/bus_stop_movie_telugu_songs_free.pdfIn PDF document text
    • https://s3.amazonaws.com/tibitexil/lead_kindly_light_sheet_music.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/49795964-c4c6-4103-ad77-f46d88e8bfe6/lawodizujedukemiri.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbfff2111f6a4198480a438/t/5fc0fcb1145a8629dcd42607/1606483123434/high_school_choir_repertoire.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a9240d7c-819a-43f7-92ee-4a883f862a0a/97381123221.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5e38619b-015f-453f-9aac-61be0ebcd6d2/33214364938.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3573ee74-f29b-41f7-ab0d-deeec62d7b03/rarudinupixukesi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/68a8c509-52d9-434e-9576-614a52e8f4f1/lekaruvunavul.pdfIn PDF document text
    • https://s3.amazonaws.com/sonutopexaramuf/81870397915.pdfIn PDF document text
    • https://s3.amazonaws.com/kugelilizibuwum/5649472519.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_off0000d2b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2B5 5496 bytes
SHA-256: 83e8e01b00fbf2375e1a07344b46dbe00dc5c7f3533b9aad90c8192077dc4194
font_01_sfnt_off0000e585.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE585 10164 bytes
SHA-256: 185c9d9c6b80627a8bb4bb274a45ec1ea3e6dee45cb867cdfdee5ece1069ada1

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