Malicious PDF — malware analysis report

Static analysis result for SHA-256 40a4a5eb9324efb6…

MALICIOUS

PDF

60.9 KB Created: 2020-11-12 16:39:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 272a9c5521e803fd17276dbeb1fc9f5b SHA-1: c25bf6967be5fa3a72db288228c80ac8255c82df SHA-256: 40a4a5eb9324efb6d96dbaedcbc0886928e2358a2e9e8fa2bb99926f17a3c2d7
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 a machine learning classifier, indicating it is likely a phishing or redirection attempt. The document contains a large number of embedded links, many of which point to known malicious redirector infrastructure, such as 'traffine.ru'. The primary function appears to be directing users to external, potentially harmful, websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • 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.
  • 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://traffine.ru/strik?utm_term=michael+loftus+reviews In PDF document text
    • https://gexaxiwiwa.weebly.com/uploads/1/3/4/4/134480231/wetix.pdfIn PDF document text
    • https://firerokuk.weebly.com/uploads/1/3/1/1/131164187/5305957.pdfIn PDF document text
    • https://rugurujumififez.weebly.com/uploads/1/3/1/3/131384765/towovamabufojodagupe.pdfIn PDF document text
    • https://vemetufubejukat.weebly.com/uploads/1/3/4/3/134367776/2354376.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/59a1279b-281f-4300-933a-8aba215d70e0/91183320874.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c08c7f2e-5e3e-487a-bdc8-ac48e81a33f5/lubegusiride.pdfIn PDF document text
    • https://s3.amazonaws.com/xupimaral/kekiguwanilowaxo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/96979008-bc54-4e89-bc21-570be818d8e9/petrucci_font_mac_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5604c0ca-7362-4a5b-a7a3-c3a080ea88e0/norma_aashto_2002_en_espaol.pdfIn PDF document text
    • https://s3.amazonaws.com/fenatagazise/zaperupuxewirujibaroxufug.pdfIn PDF document text
    • https://s3.amazonaws.com/kavalukato/68335475412.pdfIn PDF document text
    • https://s3.amazonaws.com/sifawekujiki/vometugutupesagazosilexob.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_off0000b452.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB452 5124 bytes
SHA-256: 277e9b2704d94cac0d450da22b19a06f09d38b2cd82c3a6e9ab2d3898cd60d30
font_01_sfnt_off0000c5dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC5DC 9944 bytes
SHA-256: 65a6119c1792856c20125fe1667ba379c2287f7152337a25b9b8a31c5c68a25a

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