Malicious PDF — malware analysis report

Static analysis result for SHA-256 a7a6e6bf4b096ffd…

MALICIOUS

PDF

55.3 KB Created: 2020-10-28 15:23:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 1292f7a4695a6f93a9d9cf6a237f6e1a SHA-1: 3d51c58d2c233f887eafc7d6590021deb8578d86 SHA-256: a7a6e6bf4b096ffd4ce9bc1d9c9cbd4538e7044f04fd956137091c55b5dc4205
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment 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 URL, https://cctraff.ru/aws?keyword=graco+dreamglider+swing, is identified as a malicious redirector. The document's structure and content suggest it is designed to lure users into clicking these links, likely leading to further malicious content or phishing attempts.

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.
  • 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://cctraff.ru/aws?keyword=graco+dreamglider+swing In PDF document text
    • https://boguvetasitob.weebly.com/uploads/1/3/1/3/131380850/vokujupu-pukizedukovilo.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/xewuj.pdfIn PDF document text
    • https://gowewibejeji.weebly.com/uploads/1/3/4/4/134481286/bataluxi.pdfIn PDF document text
    • https://xiwajuropoji.weebly.com/uploads/1/3/4/3/134371127/51164ffeb375f45.pdfIn PDF document text
    • https://pulepuvoko.weebly.com/uploads/1/3/4/2/134266128/madelij.pdfIn PDF document text
    • https://gofegupozomo.weebly.com/uploads/1/3/4/4/134479888/d04dcf0054f107.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367905/normal_5f9091f6f4025.pdfIn PDF document text
    • https://dadekojulaza.weebly.com/uploads/1/3/4/3/134320805/poveniv_sorakeg_legew.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411686/normal_5f98efd880186.pdfIn PDF document text
    • https://gamupizesusaza.weebly.com/uploads/1/3/1/3/131398140/wuzave.pdfIn PDF document text
    • https://rugurujumififez.weebly.com/uploads/1/3/1/3/131384765/zunevemejuvep.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367278/normal_5f942b84958ed.pdfIn PDF document text
    • https://kasukironumasex.weebly.com/uploads/1/3/1/4/131454791/disabifasuf_fogiwubidaxijal_vifogove_tapodidoluwik.pdfIn PDF document text
    • https://disaxugotusineg.weebly.com/uploads/1/3/1/8/131871710/lafemude_faruju.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369149/normal_5f8c8e2a50242.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374953/normal_5f9184e359d85.pdfIn PDF document text
    • https://mogilifus.weebly.com/uploads/1/3/0/7/130739831/sixukejomiwewanage.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380226/normal_5f8ce569c42ec.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365551/normal_5f870dbf1f066.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/492c3252-0c95-4c52-812b-5d7e21d2a582/xilutasebekijomalize.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a4da9284-3e10-47ed-b747-a01a1a4845eb/vowurozej.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cca4fb3d-fd5f-4ef2-bf45-8b1d6235852e/86241255694.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/66327037-e080-4503-8d5b-891f3130091c/dovop.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5331bba6-ca7e-4777-a186-06d11c8a137a/sizefipitiwotabekage.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_off00009a4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A4E 5380 bytes
SHA-256: 4b005237ab4ceca44f483d86b95ea51821764b8cee70384cc01d4285951f0c22
font_01_sfnt_off0000ac94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAC94 10212 bytes
SHA-256: 67452d0c7c86ae33c7243af799bd7deee97dd273f745a913ae00a8ab1318fd0f