Malicious PDF — malware analysis report

Static analysis result for SHA-256 e86026f02336bd71…

MALICIOUS

PDF

66.9 KB Created: 2020-11-25 16:44:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 6801aa63de65d4b6d5502920306b5583 SHA-1: 756c1893d6e4ac23bc50171072e0636fed58347c SHA-256: e86026f02336bd71e3bbf0e6d3c7b479d65350e0603deb2aba2bd7e844a96c83
214 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF file contains embedded links that redirect to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, suggests a lure related to 'Fedex forum section 217'. The presence of numerous external PDF links and a critical ClamAV detection further support its malicious nature, likely serving as a phishing or malware distribution vector.

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
  • 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://traffking.ru/strik?utm_term=fedex+forum+section+217 In PDF document text
    • https://loraxero.weebly.com/uploads/1/3/4/3/134332649/7562162.pdfIn PDF document text
    • https://lupigufenof.weebly.com/uploads/1/3/4/5/134509144/78fb07a93fce52d.pdfIn PDF document text
    • https://jusopusoguwukul.weebly.com/uploads/1/3/4/4/134494455/3233767.pdfIn PDF document text
    • https://gazesomudari.weebly.com/uploads/1/3/1/0/131070071/7963047.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/gowebabuxogiro/zejuk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b4db49e0-1f57-4d56-9610-27dd3987a9bd/mca_web_reports.pdfIn PDF document text
    • https://s3.amazonaws.com/vipuxafol/beylikten_devlete_osmanl_konu_anlatm.pdfIn PDF document text
    • https://s3.amazonaws.com/vasagesorajirem/79906649627.pdfIn PDF document text
    • https://s3.amazonaws.com/bunobu/62092595657.pdfIn PDF document text
    • https://s3.amazonaws.com/dejolavubukugeb/multiple_regression_analysis_spss_interpretation.pdfIn PDF document text
    • https://s3.amazonaws.com/vufupu/18992937545.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/58ac2779-3c1d-4dda-83ae-bf504f8a53f6/51203590169.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/052431f2-7c7a-4e9a-b72a-2c603417f270/capital_theatre_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/voxazedisula/assertive_communication_examples.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_off0000c825.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC825 5212 bytes
SHA-256: a657467b9883bead2241f22df3af05bc230a9deadf3d936ec43892f1dfef0b9e
font_01_sfnt_off0000d9e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9E2 10980 bytes
SHA-256: b6d2cd2f8987552f899f3b87e18b66781c8ff522d323d24b2c349fb71a71d201

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