Malicious PDF — malware analysis report

Static analysis result for SHA-256 93da0e4f8dc19886…

MALICIOUS

PDF

75.3 KB Created: 2020-12-18 09:33:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: b4ded3a23adfe99bcce503760eef13e8 SHA-1: 89d340b21af1baa990d6c488f0ca1cb09a6c194f SHA-256: 93da0e4f8dc19886906c5f1636809bc5997cad8be8addbd4727e19d9fa01fd67
214 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by multiple heuristics, including a critical finding for linking to known malicious redirector infrastructure. The embedded URL 'https://cctraff.ru/strik?utm_term=opi+pompeii+purple+dip' is a strong indicator of phishing or malware distribution. The presence of numerous other links, many pointing to PDF files on squarespace.com, suggests a link farm or a coordinated effort to distribute malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://cctraff.ru/strik?utm_term=opi+pompeii+purple+dip In PDF document text
    • https://cdn-cms.f-static.net/uploads/4451757/normal_5fa7f9e46192f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452861/normal_5fa8ad2893b91.pdfIn PDF document text
    • https://kaxogirigajel.weebly.com/uploads/1/3/4/6/134611066/66466.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403940/normal_5f9a85735e729.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421208/normal_5fc8537d12ef1.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://static1.squarespace.com/static/5fc7b7d9c89b935f15e3f851/t/5fd1852bebc7ce75e8aa4407/1607566635334/ms_pac_man_arcade_game_online.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc519ee9698b02c7f3bc40c/t/5fcd6a42f94b6402b22e0757/1607297602431/hill_racing_games_apk.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc10fb5bda9c57a97bf17be/t/5fc3e0d2eaf37e3b64135e4b/1606672594678/aisc_steel_construction_manual_13.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc10aaaf9866f3fd2d521c0/t/5fc165211972c46e3cd33103/1606509857940/lojedaxejimoganuvuzewuju.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fce0f032ebf7d3ac6434f2e/t/5fd219ac071bbc6880322e86/1607604652564/90627056820.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fce6f9241244c1973d264cb/t/5fd170df7cf94534dc502816/1607561444984/14938393241.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbffbf92e34347c703edab4/t/5fc30131f81c9a2a0c0566d0/1606615347067/strike_hero_forces_unblocked.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc674b111f6a41984abc95a/t/5fc7402f5fecd2174b5bcd74/1606893615044/famefaxe.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_off0000d1c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1C5 4440 bytes
SHA-256: 0abd085e4418d4c10c5da33f17d30520ffd9e819a40daf4fe424f06ecbd00295
font_01_sfnt_off0000e0c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0C7 15560 bytes
SHA-256: b77ae72235765543314b9f4a8a761cffad02bfb96420e5b429a590ac8b828373
font_02_sfnt_off0001109c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1109C 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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