Malicious PDF — malware analysis report

Static analysis result for SHA-256 17fa605b2d353cbb…

MALICIOUS

PDF

69.6 KB Created: 2021-01-04 20:39:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e17368a4be837d9029ac85e9d533d39a SHA-1: d5a594942c50afbc682614ff2e41e35bb42918fc SHA-256: 17fa605b2d353cbb2483a42b81fe618454e7eddcb9caeaf0e426936c0dc4b849
214 Risk Score

Malware Insights

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

This PDF file was identified as malicious by multiple heuristics and an ML classifier, specifically flagging it as a redirector link and a link farm. The embedded URLs, such as https://cctraff.ru/aws?utm_term=halogenation+of+benzene+chemguide, likely lead to malicious content or phishing sites. The document's structure and the presence of numerous external links suggest an attempt to direct users to potentially harmful external resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://cctraff.ru/aws?utm_term=halogenation+of+benzene+chemguide
    • https://cdn-cms.f-static.net/uploads/4412896/normal_5faac2534676a.pdf
    • https://cdn-cms.f-static.net/uploads/4418184/normal_5fb7b69dcce22.pdf
    • https://cdn-cms.f-static.net/uploads/4365653/normal_5f876161d41fb.pdf
    • https://vixugusimuxomuj.weebly.com/uploads/1/3/0/9/130969476/vugukovemona-rikekaregub-sudipir.pdf
    • https://cdn-cms.f-static.net/uploads/4377113/normal_5fa1ac5646f55.pdf
    • https://cdn.sqhk.co/zovifesojeme/hbOJDid/36329179818.pdf
    • https://rofaxebawo.weebly.com/uploads/1/3/4/7/134750080/8296861.pdf
    • https://julitigifoxa.weebly.com/uploads/1/3/4/3/134310533/5199087.pdf
    • https://cdn-cms.f-static.net/uploads/4379474/normal_5f8f9d59a96aa.pdf
    • https://static.s123-cdn-static.com/uploads/4406809/normal_5fe1506bc198f.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/vebenok/breakup_party_manayenge_video.pdf
    • https://s3.amazonaws.com/robumuduluwise/how_often_should_i_feed_my_goldfish_bloodworms.pdf
    • https://uploads.strikinglycdn.com/files/f1a01168-5bf5-45e2-aa46-2db54c3a0e3d/marcas_de_libretas_recicladas.pdf
    • https://uploads.strikinglycdn.com/files/6f062dc3-d2b0-40e7-aeac-0ea1ed86d6e2/pathfinder_vampire_hunter_class.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d38c.bin
10333d7ee335bc5f10ecfe91ae3355c8bcda48ce0685cac3d513e96386625c45		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD38C 5312 bytes
font_01_sfnt_off0000e583.bin
4194f78019a993586794985b2421d98e7c2eec2dafac654e0b3d06c0ef2ef30e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE583 10536 bytes

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