Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b4feeb39d241f03…

MALICIOUS

PDF

133.8 KB Created: 2020-12-20 06:08:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: ce733b4e4f85a92baa74321d6b2982b8 SHA-1: 1b7a0bc97c25ce3951e851d051c0eba7202d022a SHA-256: 3b4feeb39d241f032ae31cc80217de660974dfe927d35a81144a076f63411c18
244 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which point to disposable hosting or known malicious redirectors. The primary link directs to 'traffking.ru', a known malicious redirector. This indicates the document is designed to lead users to malicious websites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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.
  • 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/strik?utm_term=roman+de+la+rose+quotes In PDF document text
    • https://cdn-cms.f-static.net/uploads/4422897/normal_5fb9ecaedc24a.pdfIn PDF document text
    • https://gebiworopefibo.weebly.com/uploads/1/3/4/5/134583098/sifetirira.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455902/normal_5fa0b4e0bada4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494166/normal_5fdc376dbddbb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478378/normal_5fb54cee2c02b.pdfIn PDF document text
    • https://dedutosaku.weebly.com/uploads/1/3/4/8/134852257/xukugiwenajebif_dojalutufin_wakomusarov_nirabivubig.pdfIn PDF document text
    • https://manidakaril.weebly.com/uploads/1/3/4/6/134641318/kefogiwa_xujevefupovoti_zatufi_wasofidizokef.pdfIn PDF document text
    • https://nixofukotozawe.weebly.com/uploads/1/3/4/3/134313466/vurutimubobuwaz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470830/normal_5fdad69c97eb8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384299/normal_5fceaf149fefc.pdfIn PDF document text
    • https://gupapuna.weebly.com/uploads/1/3/4/7/134726568/fenipet.pdfIn PDF document text
    • https://sileperu.weebly.com/uploads/1/3/1/4/131406390/1864422.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4477626/normal_5fcacbffa72df.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366018/normal_5f87ace7687be.pdfIn PDF document text
    • https://bubixoduxufito.weebly.com/uploads/1/3/1/0/131070588/2484142.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427105/normal_5fb52f827b36a.pdfIn PDF document text
    • https://ketezujozak.weebly.com/uploads/1/3/4/7/134744557/sugamufefa-voxud-dupil-rotudeberod.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370077/normal_5fbebf976d527.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0001d027.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1D027 5104 bytes
SHA-256: dc3b998c97eedb2598e04fc83d2656d09aa94a76f15b4164f7e8b45e87a8c86f
font_01_sfnt_off0001e162.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1E162 12984 bytes
SHA-256: e7b8b4e5b013be2c87d911cc0be3c11a9e0920ff6df81fe77f1303614192a297

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