Malicious PDF — malware analysis report

Static analysis result for SHA-256 a4e06be8e4d9e774…

MALICIOUS

PDF

81.2 KB Created: 2021-06-01 10:43:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: ce060f6d3c4fd4b9ec43525fa4e91773 SHA-1: 51fe1f4e527edc7b6fc8f96996f7594bac168948 SHA-256: a4e06be8e4d9e774b5f1eaab14bad9cd9156a1561e6d96b9c1c7f492f067348d
186 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many pointing to disposable hosting, indicating a link farm or phishing attempt. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or SEO spam. No scripts were extracted, but the presence of numerous external URLs suggests the document's primary purpose is to redirect users to potentially malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://soxebez.ru/123?utm_term=anomaly+2+mod+apk+free PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4379236/normal_5ff2250ac03eb.pdfIn PDF document text
    • https://rikomurisixub.weebly.com/uploads/1/3/1/4/131454733/9272846.pdfIn PDF document text
    • https://vutipewuzoneker.weebly.com/uploads/1/3/4/4/134472613/4ea61d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484818/normal_60503cf942d8e.pdfIn PDF document text
    • https://novolako.weebly.com/uploads/1/3/4/4/134402557/fujukafawu-fasetaboje-forafumiwuvubev-wumupuno.pdfIn PDF document text
    • https://bawowafakapapo.weebly.com/uploads/1/3/4/0/134042412/6452553.pdfIn PDF document text
    • https://dozajumeguru.weebly.com/uploads/1/3/1/3/131379069/xiledo.pdfIn PDF document text
    • https://zemejinifuv.weebly.com/uploads/1/3/4/5/134577925/kexeku.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/369a1b07-f65f-4bc9-a544-b8b5a8af41f3/92552480451.pdfIn PDF document text
    • http://xojipoxar.pbworks.com/w/file/fetch/144448812/70795889165.pdfIn PDF document text
    • http://paderukut.pbworks.com/f/quanto_mais_o_tempo_passa_mais_eu_gosto_de_voc.pdfIn PDF document text
    • http://zopujoxobug.pbworks.com/w/file/fetch/144412188/44123414292.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0e90e7ab-af6f-440c-a859-2666e943a1fe/jasaselovagutajo.pdfIn PDF document text
    • http://foxobekizax.pbworks.com/w/file/fetch/144453033/what_is_definition_of_balance_sheet.pdfIn PDF document text
    • http://mukonisu.pbworks.com/f/2.dnem_tanzimat_iirinin_genel_zellikleri.pdfIn PDF document text
    • http://godekazonigi.pbworks.com/f/how_to_get_free_robux_no_anti_bot_verification.pdfIn PDF document text
    • http://lipadune.pbworks.com/w/file/fetch/144412566/bijevuxazusedijurinifow.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_off0000ea74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA74 5296 bytes
SHA-256: aefb834a50a55af8e72a0703a73d366cefc91ed8ea7835aeb1a0ba41711ba268
font_01_sfnt_off0000fc73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC73 26636 bytes
SHA-256: 9f9b38f8a51b431b0d35d9199f44eeb28c588baad251393679d6aed08d9e1940

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