Malicious PDF — malware analysis report

Static analysis result for SHA-256 02fe566c4a107afb…

MALICIOUS

PDF

71.2 KB Created: 2020-11-22 07:19:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: e3490900b9d18fb604a1fedbbe06ecc1 SHA-1: 9b4dbed3fbf6173555be8eb5ec35785c2370bf4c SHA-256: 02fe566c4a107afbe0e39d324c86d8a680d7d3eacdeca8fdf20a4e9cdd51076d
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by multiple heuristics and an ML classifier, indicating a high likelihood of malicious intent. It contains a large number of external links, with one suspicious URL (traffset.ru) identified as potentially malicious. The presence of embedded URLs and the PDF structure suggest it is designed to redirect users to malicious sites, likely for phishing or to download further payloads. No scripts were extracted, but the PDF structure itself is indicative of a link farm or redirection tactic.

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://traffset.ru/123?utm_term=like+water+for+chocolate+january+questions+and+answers PDF link annotation
    • https://zevefexa.weebly.com/uploads/1/3/4/7/134727867/4652553.pdfIn PDF document text
    • https://dejolezeg.weebly.com/uploads/1/3/2/8/132815968/wizokulapigitub.pdfIn PDF document text
    • https://jugidemavewug.weebly.com/uploads/1/3/4/2/134265355/5732859.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/7d7dbf7d-96ae-4487-a4c6-12ca4e8b8fe2/69576162854.pdfIn PDF document text
    • https://s3.amazonaws.com/wifozuxeku/5184644057.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/be1ad1e9-9223-47c0-a4cd-6d3496fcd13f/suzuki_eiger_400_owners_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aff99cc3-c447-4982-ab0f-8fcb62055376/fovuweromajorosaji.pdfIn PDF document text
    • https://s3.amazonaws.com/jixerubowi/rozoxuxenirutabibepid.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/69a422f0-8029-45a3-aada-e0adbf5821a0/96437679153.pdfIn PDF document text
    • https://s3.amazonaws.com/baxadelefofibuz/rother_elementary_redding_ca.pdfIn PDF document text
    • https://s3.amazonaws.com/kosipefojaw/18078971423.pdfIn PDF document text
    • https://s3.amazonaws.com/najubu/pandora_plus_free_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/pozokimepe/9993104322.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b3447b84-3a8d-402f-aad0-9d7c4dd23154/fundamentals_of_small_group_communication.pdfIn PDF document text
    • https://s3.amazonaws.com/zufojadibi/sarasota_to_tampa_bay.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_off0000d8b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8B7 5508 bytes
SHA-256: 9d41ea27320430daabf471c1af20651996c67dbd094514f7062097618ada291f
font_01_sfnt_off0000eb91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB91 10508 bytes
SHA-256: a9edb3e84f369a2ec4accac574d60f98ec21f9a53994537607e7e311d3cd16f5

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