Malicious PDF — malware analysis report

Static analysis result for SHA-256 7590b2a1f0502ccc…

MALICIOUS

PDF

57.4 KB Created: 2020-10-29 00:16:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 6113dba7812b862ff6eecf4a1af1b679 SHA-1: 90563f7057f47cbd69145358ce2ff70aebd88730 SHA-256: 7590b2a1f0502ccc279ad9292b71c273e8198168763d50a26addb44802e669d1
164 Risk Score

Malware Insights

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

This PDF file contains multiple embedded URLs, with one specifically identified as a malicious redirector. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' indicates the document likely instructs the user to open a password-protected archive, a common method to conceal malicious payloads. The presence of numerous links, including one pointing to known malicious infrastructure, suggests an attempt to direct the user to harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://gettraff.ru/aws?keyword=2002+mustang+gt+horsepower In PDF document text
    • https://rizowexerezo.weebly.com/uploads/1/3/4/2/134265486/3670690.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365612/normal_5f8744ea5ede4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374979/normal_5f91e680ddfae.pdfIn PDF document text
    • https://zesopupejilit.weebly.com/uploads/1/3/0/7/130738861/8911912f5f58fde.pdfIn PDF document text
    • https://sokuvotaboraj.weebly.com/uploads/1/3/0/7/130776263/5aaddbea.pdfIn PDF document text
    • https://vemowidododujev.weebly.com/uploads/1/3/4/3/134353566/dagimuzukisugikor.pdfIn PDF document text
    • https://rokufekajo.weebly.com/uploads/1/3/0/8/130814342/f62b06607.pdfIn PDF document text
    • https://gukaguse.weebly.com/uploads/1/3/1/3/131398473/nunadeto.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388427/normal_5f8f4049a6914.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393033/normal_5f9065a9052c4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403936/normal_5f92386535cc1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393356/normal_5f968657a42ac.pdfIn PDF document text
    • https://niresofet.weebly.com/uploads/1/3/2/6/132682193/cf87ab801e7ddb.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/govorikepudago-gixidawele-wawep-xoxebilepadevu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366364/normal_5f976c8b8fc9b.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/sizadagazagaj/11549331319.pdfIn PDF document text
    • https://s3.amazonaws.com/sugaguxagu/ctet_paper_1_syllabus_in_english.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9d5a1ebe-f4c9-48f6-acaa-96a8acd90138/39826305858.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/afaceda3-c3e0-48ad-a988-738293ff34d2/balovebomugugitegipipa.pdfIn PDF document text
    • https://s3.amazonaws.com/vexosafugunu/56460883137.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ac16f6a8-6a44-43bb-ab3c-9c902f08aff9/pamilepebomivolerinu.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_off00009d11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D11 5472 bytes
SHA-256: d21a5df2224b46e35dc14ad6b47e2d778e1796d7605ed15b5b4820d17fcef365
font_01_sfnt_off0000af92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAF92 12276 bytes
SHA-256: 2eea587dceff0debfd59f714ef00c8980e36d9732c9d061d3b0847aba88351dd