Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e002074313b3023…

MALICIOUS

PDF

68.1 KB Created: 2021-05-30 20:40:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 938749ea5fba0e45edec15409d1340f6 SHA-1: 832eb2fb6db926631e162e9b24c4b61c0f46b4e1 SHA-256: 7e002074313b30237b1b290dc227fcc5fc521fee6417eb4e0ed71999b543a75d
186 Risk Score

Malware Insights

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

This PDF document contains a large number of external links, many pointing to disposable hosting services, suggesting a link farm or phishing operation. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. The document body, though heavily obfuscated, contains metadata suggesting it was generated by wkhtmltopdf, and the presence of external URIs points to an attempt to redirect the user to potentially malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://bologen.ru/123?utm_term=vijayawada+kanaka+durgamma+songs+naa+songs PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4368486/normal_5fcf5ddb9ae73.pdfIn PDF document text
    • https://datevapo.weebly.com/uploads/1/3/4/3/134338939/4017068.pdfIn PDF document text
    • https://lifexego.weebly.com/uploads/1/3/0/8/130874678/abffffe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418565/normal_603416a349535.pdfIn PDF document text
    • https://xiruzukigipimog.weebly.com/uploads/1/3/4/8/134865515/60ea5944b.pdfIn PDF document text
    • https://tiwokixaxuvap.weebly.com/uploads/1/3/4/2/134235176/jomezilujafiz.pdfIn PDF document text
    • https://jezogoxus.weebly.com/uploads/1/3/4/4/134402646/217987.pdfIn PDF document text
    • https://pitulero.weebly.com/uploads/1/3/2/6/132683003/9491849f57.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412568/normal_6020721b83331.pdfIn PDF document text
    • https://pewofofuvalok.weebly.com/uploads/1/3/0/7/130775386/vamis-kojurigelome.pdfIn PDF document text
    • https://nukesusidogix.weebly.com/uploads/1/3/4/6/134608931/farivijuvexesix_niluduronu_dugekur.pdfIn PDF document text
    • https://niritamin.weebly.com/uploads/1/3/4/4/134486676/minivisi_julotalikuwe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388169/normal_5fe893978e0e3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480743/normal_60339c9355c2d.pdfIn PDF document text
    • https://kexujutexaz.weebly.com/uploads/1/3/1/8/131858540/8350555.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/54bde328-9fb3-43b6-a266-14d02dc641c5/63209345239.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b5a0b42d-3100-431c-8854-516539931471/star_trek_into_darkness_movie_in_hindi_filmyzilla.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d9d1ec5f-04c8-436e-899f-76f352c241aa/garmin_405_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3a7ed87a-af60-4d31-8834-2f13935a59d3/gawovomolunumukogipemes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d058541c-66fa-4e54-988c-0961c31c3b81/1997_honda_foreman_400_parts_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/853eab1e-7ddb-4824-8b4d-d7e26410a764/15378716421.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1107af3b-f6f1-44bc-b346-f7095b93f2e0/omron_model_hem-711dlx.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_off0000cc2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC2D 5412 bytes
SHA-256: e54d042fc7c4191bedd1a97baf0dea68aa9b0e4f654c72972c6cf7710e71b0fb
font_01_sfnt_off0000dea6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEA6 10576 bytes
SHA-256: baf2ada616b9f3de602ef016bdb5d05b456b57a597ce6f9aeac51790275c9788