Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd70213b3663d004…

MALICIOUS

PDF

74.5 KB Created: 2020-11-19 00:29:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: b370a95123b5d9f695f53ff7514835b3 SHA-1: 207009703ab5376b9f74a27944311b3aad0f434b SHA-256: dd70213b3663d00465090d0a0516540eac6c932f72773f4311e114b474b6a84b
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a large number of external links, many hosted on disposable domains, indicating a link farm designed to direct users to potentially malicious sites. ClamAV detected this file as Pdf.Phishing.Trojan, and ML classification strongly suggests maliciousness. The presence of external URIs and the link farm heuristic point towards a phishing or scamming attempt.

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://trafftec.ru/strik?utm_term=panasonic+sa+bt230 PDF link annotation
    • https://gugozakeku.weebly.com/uploads/1/3/4/5/134588211/gakagudib-garigusokoka-wivenakopufeda.pdfIn PDF document text
    • https://bupefozatige.weebly.com/uploads/1/3/4/3/134384552/pobusemiwaravovipeva.pdfIn PDF document text
    • https://subefivu.weebly.com/uploads/1/3/4/6/134688636/3e966278f7a8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453333/normal_5fb2af3e5ee33.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476750/normal_5fb372df2931d.pdfIn PDF document text
    • https://fotejisatowonu.weebly.com/uploads/1/3/2/3/132302873/vefaramopofukabegub.pdfIn PDF document text
    • https://berotejenikakoz.weebly.com/uploads/1/3/0/7/130775756/4533192.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/jirebarixo.pdfIn PDF document text
    • https://vodiwisilob.weebly.com/uploads/1/3/2/6/132681054/mafizodumamapefuri.pdfIn PDF document text
    • https://lobevebuwavija.weebly.com/uploads/1/3/4/3/134394718/e635c64.pdfIn PDF document text
    • https://nimorozidu.weebly.com/uploads/1/3/4/3/134373006/b3be5b7.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/6410754d-1233-4848-ad68-d9fdb76f8b9f/xopig.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/26419c65-3e16-44af-b765-cb4a813470d5/lelelixolimopol.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e30c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE30C 5244 bytes
SHA-256: 8ba8b266ad36bab325cce34ad1a1d3a049b1d92d571cdf711216824d1a46c27e
font_01_sfnt_off0000f4f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4F2 11816 bytes
SHA-256: 1a220708f5bd732d581d0ff563b730b78380aa3f19779fe1cb4cbc124a23bf1c

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