Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a4582c134334858…

MALICIOUS

PDF

70.1 KB Created: 2021-01-05 08:28:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 3eaaee9b481905c9e1162c837921bf1b SHA-1: 1b2671e5e322f647efd2049eae42098c67fd1990 SHA-256: 0a4582c134334858dce0b58b8e9809b08984279d699484b1603ff355e3c68a94
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to Weebly-hosted PDFs, suggesting a link farm or phishing campaign. The presence of a critical heuristic for PDF link farming and ClamAV detection as Pdf.Phishing.Trojan indicates malicious intent. The embedded URLs are likely used to redirect users to malicious sites for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://trafftec.ru/123?utm_term=oral+b+pro+3000 PDF link annotation
    • https://xajapeni.weebly.com/uploads/1/3/4/3/134341300/niragedapozob_piditasuravileg_valozep_zokiluge.pdfIn PDF document text
    • https://jusegopij.weebly.com/uploads/1/3/4/4/134480833/1879794.pdfIn PDF document text
    • https://gonotelavekufuf.weebly.com/uploads/1/3/4/6/134615299/c617534c70d26e.pdfIn PDF document text
    • https://pirivelel.weebly.com/uploads/1/3/4/5/134505874/mubowewuneg.pdfIn PDF document text
    • https://lufokozu.weebly.com/uploads/1/3/4/7/134755413/votinarivere.pdfIn PDF document text
    • https://wimelavejitovuv.weebly.com/uploads/1/3/4/5/134597731/nobejakasopozapuz.pdfIn PDF document text
    • https://dubasebajulux.weebly.com/uploads/1/3/1/3/131382081/5158132.pdfIn PDF document text
    • https://cdn.sqhk.co/vogoxaginoje/i7uvjbX/free_throw_line_distance_middle_school.pdfIn PDF document text
    • https://gogebuzavoriro.weebly.com/uploads/1/3/2/6/132681212/nadisuzunogafateweb.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/xulepiwa/employee_complaint_form_template_free.pdfIn PDF document text
    • https://s3.amazonaws.com/wefadep/xadixew.pdfIn PDF document text
    • https://s3.amazonaws.com/sajezife/grep_sed_awk_cheat_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/sodoxi/takuxi.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_off0000d5ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5FF 5108 bytes
SHA-256: d23888108c0fed3e7609b753d5fbbffab09048fdf63f2847d62074871a8544fe
font_01_sfnt_off0000e75e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE75E 10764 bytes
SHA-256: 7f0cee12e78b155b31d621ffb73acf592f0ae690b05b6dd6f95c03c9fa44ad46

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