Malicious PDF — malware analysis report

Static analysis result for SHA-256 45aa957e7051ae3b…

MALICIOUS

PDF

76.8 KB Created: 2020-12-15 00:51:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 30461d4b119848f09121bcfdb1576b0c SHA-1: 620d034fffcb342369768e5efb8436063b572a0b SHA-256: 45aa957e7051ae3bc662691dd2c3c96d6e99f605f0ce5b9e80d4720b8f070713
156 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by a ClamAV signature and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous external links, with a critical heuristic identifying a link farm structure pointing to 22 external PDFs. The primary URL, https://trafficel.ru/strik?utm_term=seatgeek+vs+stubhub+vs+ticketmaster, suggests a lure related to ticket vendors, likely to redirect users to malicious content or phishing pages.

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/strik?utm_term=seatgeek+vs+stubhub+vs+ticketmaster PDF link annotation
    • https://rosiruwolokixa.weebly.com/uploads/1/3/4/7/134765588/nesutilupuvebelawori.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381962/normal_5f985c63c1be2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382953/normal_5f9d8387d81f7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418175/normal_5fb264f563931.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/92f2a215-f044-41d0-a9e6-524152d19e56/57653606190.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e9d83c54-3a2c-4c67-b375-c35303f08fff/in_the_heat_of_the_night_cast_1990.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0fb5957d-96f6-47da-b28f-0d3a26bedabe/75096322732.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/87826c5f-45e0-455b-b5db-fb7c68b3dbbe/w04_transistor_datasheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/584576d0-6904-47ce-862c-c3c418cad65b/rimef.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5c5aef7cf8c75404c2941/t/5fcd347774a40730fba39ad5/1607283832372/45694909767.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fb31a61c-a40e-4bf2-9ab2-cd88731ff266/97434001596.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_off0000efe3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFE3 5548 bytes
SHA-256: 8891bec455eb6b4fddc38379a301416f70cc8c5d467d70c8fc7c7e2abca84c7e
font_01_sfnt_off000102a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102A9 10660 bytes
SHA-256: 72c9b018802d3b04e592d751500b79253d929b8089caf205ab0acdc89f277d1a

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