Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a2d6630103fe49f…

MALICIOUS

PDF

68.7 KB Created: 2020-11-13 09:47:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 379180cc433eeb5016f847ef21bad8d3 SHA-1: 1652859bb74d8fba97819b321e5c3ea0697a0c88 SHA-256: 8a2d6630103fe49f60e7935e5d97738af95f0fcbb85529afe2f87ca41b8bc950
244 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF file contains a large number of embedded links, many of which point to disposable hosting services and redirector infrastructure. The primary link directs to 'traffmen.ru', a known malicious redirector. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution by redirecting users to harmful sites.

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
  • 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://traffmen.ru/strik?utm_term=tutorial+archicad+22+bahasa+indonesi In PDF document text
    • https://xazojitov.weebly.com/uploads/1/3/1/4/131408465/bumefewaxa_bisukeme.pdfIn PDF document text
    • https://buveziketi.weebly.com/uploads/1/3/1/3/131398526/lexajuxuwedupu_gefajinuvuf_nofuwekinafe_pimedi.pdfIn PDF document text
    • https://jubunukaf.weebly.com/uploads/1/3/1/4/131483214/6bd860ad2.pdfIn PDF document text
    • https://ditiwudo.weebly.com/uploads/1/3/1/4/131452947/zepumajetefevafar.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379606/normal_5f9137c9bd878.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421208/normal_5f97a46027b98.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369909/normal_5f91c4b1b03f8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388163/normal_5f8e7d9cb2fdc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392871/normal_5f8e67882d691.pdfIn PDF document text
    • https://vogaxuruxav.weebly.com/uploads/1/3/4/3/134352923/pitijonomizavefer.pdfIn PDF document text
    • https://zebazowis.weebly.com/uploads/1/3/4/3/134310266/sejariposij_xepeja_zukifaxixil.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/8e8fd17a-8557-4a9a-94b9-41d7a7ec0888/54318125548.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9fa7f37b-4a8a-4788-8674-a012f52bf6fc/63568874263.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_off0000ce54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE54 5248 bytes
SHA-256: c5c28a5e2fe24bea17fdef29cc5197db2430e45485f078fcd29a719e2501e311
font_01_sfnt_off0000e018.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE018 11384 bytes
SHA-256: 3367ff9a1d0ee52f2f0ace614b09074d971e4a8020023d1ab83fa7b54abb8dc0

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