Malicious PDF — malware analysis report

Static analysis result for SHA-256 d47a4bb6fe9ab4b5…

MALICIOUS

PDF

71.0 KB Created: 2021-01-18 03:03:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 9bddb87945f491263eb6ec0fa039176a SHA-1: ede8b3bac54316776fe1961295adac99a6c4f45c SHA-256: d47a4bb6fe9ab4b5a6240bd3dd87a7fa342b3bc1e10e1f48d3a0328c75eb04eb
184 Risk Score

Malware Insights

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

The file was identified as malicious by multiple heuristics, including a critical alert for redirecting to known malicious infrastructure. The embedded URLs, particularly 'https://traffking.ru/123?utm_term=using+the+ling+6+sound+test+everyday', strongly suggest a phishing or malware distribution attempt. The PDF structure and link farm characteristics further support this, indicating a deliberate effort to lure users to potentially harmful 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 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.
  • 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=using+the+ling+6+sound+test+everyday In PDF document text
    • https://cdn-cms.f-static.net/uploads/4417141/normal_5fa0f8eea9afb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446401/normal_5fd8ebf40c03d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409256/normal_5fad8f9a9516c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366304/normal_5f9d14f60ded5.pdfIn PDF document text
    • https://site-1168487.mozfiles.com/files/1168487/10701623402.pdfIn PDF document text
    • https://site-1178820.mozfiles.com/files/1178820/can_you_order_mod_pizza_online.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375528/normal_5f94f3eeabf4a.pdfIn PDF document text
    • https://site-1178235.mozfiles.com/files/1178235/top_network_marketing_professionals.pdfIn PDF document text
    • https://site-1177462.mozfiles.com/files/1177462/sovedapuxabikuvekizopemi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495037/normal_5fab79176498f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://najorenowodume.epizy.com/82529344887.pdfIn PDF document text
    • http://befojarariwowab.epizy.com/1817515323.pdfIn PDF document text
    • https://s3.amazonaws.com/regegozumekoza/sofij.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_off0000d973.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD973 5396 bytes
SHA-256: b60280bbfd95e873f7f6e16c564f4044ddc68629e641d9f5cfd530569c7b7cd6
font_01_sfnt_off0000ebd0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBD0 10360 bytes
SHA-256: 553c28b534734cd6e6c5b4a5e9248a509440d2e1014f2c90623285062ac33653

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