Malicious PDF — malware analysis report

Static analysis result for SHA-256 11c8ee7660ba7891…

MALICIOUS

PDF

70.2 KB Created: 2020-12-19 12:04:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 435f22dc9856f4542871dcc0dd269e6e SHA-1: f8c77b6f8c7e363e869770946550dad1b988ace7 SHA-256: 11c8ee7660ba7891ef4b7e1f6bc3fd85fac9b7d9468382013b69ca42c843eda7
214 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector. The heuristic firings indicate a malicious redirector link and a link farm, suggesting the document's primary purpose is to direct users to potentially harmful websites. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a phishing or malware distribution attempt.

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/123?utm_term=southern+live+oak+tree+for+sale In PDF document text
    • https://zetizisoxaw.weebly.com/uploads/1/3/4/4/134498522/27bae677232c70f.pdfIn PDF document text
    • https://fezojeme.weebly.com/uploads/1/3/4/6/134614855/1fafd975da.pdfIn PDF document text
    • https://kuburabet.weebly.com/uploads/1/3/4/3/134362545/120709bd.pdfIn PDF document text
    • https://talogaxuzule.weebly.com/uploads/1/3/4/5/134596774/zomifojimugop-siwewedomu.pdfIn PDF document text
    • https://konanofekevofi.weebly.com/uploads/1/3/4/3/134367310/wepidupev.pdfIn PDF document text
    • https://tapuroxoj.weebly.com/uploads/1/3/4/5/134599682/4795507.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/gosete/asciidoctor_theme_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/tetazino/lee_jung-eun_hi_bye_mama.pdfIn PDF document text
    • https://s3.amazonaws.com/muwomapotumugi/94418610128.pdfIn PDF document text
    • https://s3.amazonaws.com/fuwawibu/poison_oak_tree_information.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc7b8b25426f52a30e0d42f/t/5fc80276c921037e56a5a1f1/1606943350974/star_wars_destiny_dice_game.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5064cc6d96458363c8a09/t/5fcf0684ba7003536ea1d67e/1607403141520/86483829521.pdfIn PDF document text
    • https://s3.amazonaws.com/vovuzize/cpb_study_guide_books.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0cc6dc14dfd36fef0f123/t/5fc0ebb564571256545d0e43/1606478773918/most_popular_glock_22.pdfIn PDF document text
    • https://s3.amazonaws.com/sivanira/titunazokemigag.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_off0000d554.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD554 5084 bytes
SHA-256: f5366f288574145a163a749ccb67971872531f481399a234a004ebff2ad3bbab
font_01_sfnt_off0000e69c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE69C 11108 bytes
SHA-256: b6915ebc8c853e38a0877b2b13722fdf03eb97a39337df874c12ef9a63779273

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