Malicious PDF — malware analysis report

Static analysis result for SHA-256 9997f210e647354d…

MALICIOUS

PDF

67.5 KB Created: 2021-03-02 02:47:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 9f93449e45c64590adf36d276bbcd5a1 SHA-1: 20528cdea42b7d9330ae3d89f9330afd14867a72 SHA-256: 9997f210e647354d9791e455834b3c86c6a1873a4f4f31a9bb4ea643b5047440
156 Risk Score

Malware Insights

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

The PDF file contains multiple external links, a common tactic in SEO spam and phishing campaigns to drive traffic to malicious sites. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically identified as a phishing trojan. While no scripts were directly extracted, the PDF structure and embedded URLs suggest an attempt to redirect users to potentially harmful content.

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://lozipotod.ru/strik?utm_term=what+would+be+the+outer+electron+configuration+of+alkaline+earth+metals PDF link annotation
    • https://tasozowi.weebly.com/uploads/1/3/4/3/134315408/1e35d45ce.pdfIn PDF document text
    • http://lozipazom.sportsontheweb.net/how_to_pass_a_class_b_cdl_driving_test.pdfIn PDF document text
    • https://nirafagasebop.weebly.com/uploads/1/3/4/5/134588809/3924724.pdfIn PDF document text
    • https://tuzopukerokep.weebly.com/uploads/1/3/5/3/135347688/9662936.pdfIn PDF document text
    • http://lebizifijafaxim.medianewsonline.com/de_que_se_trata_la_obra_cien_aos_de_soledad_resumen.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bunakakivukutus.epizy.com/85746063042.pdfIn PDF document text
    • https://s3.amazonaws.com/norozovijalu/class_5_maths_worksheets_cbse.pdfIn PDF document text
    • https://s3.amazonaws.com/fizup/betty_s_burgers_nutritional_information.pdfIn PDF document text
    • http://guganukipajaxi.rf.gd/weight_watchers_bath_scales_reviews.pdfIn PDF document text
    • http://damufabenipete.rf.gd/wutotu.pdfIn PDF document text
    • https://s3.amazonaws.com/piwupevivotixi/legatotugoxomedumafudolow.pdfIn PDF document text
    • https://s3.amazonaws.com/mavixu/flame_test_lab_investigation_answers.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cb2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB2F 5744 bytes
SHA-256: 0e424c08177139bcb960751844f9328a95e9c1cceb8fb6740a6d795b1f974578
font_01_sfnt_off0000dea7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEA7 9984 bytes
SHA-256: 02a38e796a718deaa811f48f102f982201927e30e5e59101995f2a1cfce17d9f

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