Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ebfd794af69f4e9…

MALICIOUS

PDF

76.7 KB Created: 2020-12-26 08:25:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 587ff1e638b67ce855c4dc786a93a7e4 SHA-1: eb14e5ffe8a676650f5ab57aa9dd7f80abd3d8e8 SHA-256: 0ebfd794af69f4e979e4887d8aa9e0676184dea4d7fffa6211ec4da929e91a74
214 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to potentially malicious redirectors or link farms, as indicated by the 'PDF_MALICIOUS_REDIRECTOR_LINK' and 'PDF_SEO_LINK_FARM' heuristics. The primary lure appears to be related to 'pottery painting near me adults', suggesting a phishing or scam attempt. While no scripts were explicitly extracted, the nature of the embedded links and the ML classification strongly suggest malicious intent, likely leading to further malware downloads or phishing pages.

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://gettraff.ru/strik?utm_term=pottery+painting+near+me+adults In PDF document text
    • https://cdn-cms.f-static.net/uploads/4476272/normal_5fd77553bde5c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476301/normal_5fd6554bccddb.pdfIn PDF document text
    • https://cdn.sqhk.co/fegujajox/jhAgcgh/learn_pencil_drawing_for_beginners.pdfIn PDF document text
    • https://xesaranit.weebly.com/uploads/1/3/2/6/132696194/pulesu-dofepaxok-nisemovez.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450732/normal_5fc9cd8bad230.pdfIn PDF document text
    • https://dumetokewip.weebly.com/uploads/1/3/4/3/134394823/vanuxegavivoziw_nageke_xopanulojamom_jevunepurinim.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374984/normal_5f8a9bf615cd2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418762/normal_5fc1d0ed2a9c8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368466/normal_5fe656ae1d8d6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384640/normal_5fd11b80347de.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415061/normal_5f95887aa490d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384301/normal_5fa09fbf10fca.pdfIn PDF document text
    • https://cdn.sqhk.co/jekefebiba/ijndicS/nimajidegubavojopomam.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/wanasuvedigo/79552698172.pdfIn PDF document text
    • https://s3.amazonaws.com/fenatagazise/kamabafuzonusawivonutemi.pdfIn PDF document text
    • https://s3.amazonaws.com/levumoduf/81929080524.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_off0000ec98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC98 5380 bytes
SHA-256: a718d87102fb989931115a1b65cc0a10533dc2aa5bb272efc29cc18334f61c10
font_01_sfnt_off0000fed6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFED6 11416 bytes
SHA-256: 6aedb9bb71c61d161ef8114d4f8ea7f4fb15f227a3a1a3126b23a5e1d4f10c23

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