Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee59ecc471dfb29a…

MALICIOUS

PDF

76.8 KB Created: 2021-02-24 07:27:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: d6f0652463903d08e195d9ebc6a5c395 SHA-1: 53fb524943d90c11c4563ec06f5c76d799e40000 SHA-256: ee59ecc471dfb29ae2d32523577ac0b5e8655ea7aca8d6737bb692b57d5d7d27
126 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs, with a primary one pointing to 'baarspo.ru' and a query parameter suggesting a lure related to bicycle components. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a high number of links to disposable hosting, reinforcing the phishing or malware distribution intent. ClamAV detection as 'Pdf.Phishing.Trojan' further confirms its malicious nature. No scripts were extracted, but the document's structure and embedded URLs strongly suggest it's designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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 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://baarspo.ru/strik?utm_term=ultegra+di2+groupset+price+philippines PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366632/normal_6020267c3b020.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425515/normal_6010c6006a80c.pdfIn PDF document text
    • http://pejalajumore.22web.org/merogulofesow.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378607/normal_5fc623a2d0499.pdfIn PDF document text
    • https://cdn.sqhk.co/zewumabigige/hd61T5v/27943198305.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408851/normal_602bdc51e492e.pdfIn PDF document text
    • https://cdn.sqhk.co/fagijopi/Ogh35Zi/gukusamirunudifa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368770/normal_5fddd68cccb58.pdfIn PDF document text
    • https://cdn.sqhk.co/folamudoj/hg8idih/bunabaloni.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392453/normal_5ff9a7f7ae099.pdfIn PDF document text
    • http://xunajoza.22web.org/lokisolibubajerapi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402252/normal_5ff9109a45a1c.pdfIn PDF document text
    • https://niritopep.weebly.com/uploads/1/3/4/6/134634222/646f737c2cbda.pdfIn PDF document text
    • https://fawofasoz.weebly.com/uploads/1/3/1/4/131454040/5106920d.pdfIn PDF document text
    • https://cdn.sqhk.co/wadelovelo/hjhehMK/konijufonom.pdfIn PDF document text
    • https://cdn.sqhk.co/vawikepaf/haR0gcC/96092422950.pdfIn PDF document text
    • https://wogalipa.weebly.com/uploads/1/3/4/3/134316604/3bb7d4d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366365/normal_6017891e547b1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/gagagakigibapo/pudotowaze.pdfIn PDF document text
    • https://s3.amazonaws.com/fomudebipefasu/zizupewudipavozeroriledu.pdfIn PDF document text
    • http://safubifulaxoxe.rf.gd/nibupimenorikiwuxikadekem.pdfIn PDF document text
    • https://s3.amazonaws.com/fuzafuzeruwit/what_is_polarity_in_chemistry.pdfIn PDF document text
    • http://besasasef.rf.gd/mastizaade_a_full_movie.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e049.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE049 5340 bytes
SHA-256: 7c2ba8662df17b920388ae6d9090306e753f8805b0e549d612fddcd1645f7dff
font_01_sfnt_off0000f263.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF263 10728 bytes
SHA-256: 1dd41b9beb528259bece0617e0ab39ffaaf770c1f103027864bfab68a31dca4f
font_02_sfnt_off000116cd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x116CD 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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