Malicious PDF — malware analysis report

Static analysis result for SHA-256 d00f291780533ee2…

MALICIOUS

PDF

66.0 KB Created: 2020-11-10 09:55:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: acd58edef0345926353d757194ba0a63 SHA-1: fe748468e28f6e8d7c628baa783d079980d1ef1b SHA-256: d00f291780533ee2999d11ae8e5dd27499d347a818267a7d2d8eed3eee0a7174
186 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV. It contains a large number of external links, many pointing to disposable hosting, suggesting a link farm or redirection scheme. The primary URL, 'https://traffnew.ru/123?keyword=2019+2020+monthly+blank+calendar+template', indicates a lure related to calendar templates. No scripts were extracted, but the PDF structure and link farm behavior are indicative of phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://traffnew.ru/123?keyword=2019+2020+monthly+blank+calendar+template PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4420018/normal_5f9d6373eb249.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417137/normal_5fa577be3a165.pdfIn PDF document text
    • https://sidujojuwizubal.weebly.com/uploads/1/3/4/5/134587716/wupakiga_jijomisoluk_bonifabodup.pdfIn PDF document text
    • https://jowojebutoda.weebly.com/uploads/1/3/4/4/134487303/8540026.pdfIn PDF document text
    • https://lepitosamodovax.weebly.com/uploads/1/3/4/3/134335454/4081067.pdfIn PDF document text
    • https://sajugolev.weebly.com/uploads/1/3/4/4/134463158/wotode-vonezu-kunukam.pdfIn PDF document text
    • https://sunakixekorej.weebly.com/uploads/1/3/4/3/134376052/7478900.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/99a969bd-6784-490e-88bf-1a3a0268a26d/jovebakakexivisujanorup.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e370ae61-761b-4ccc-84c2-1cc00cae4a77/domuletalokulubujeba.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/da96f285-aebe-4bbf-b990-d0582910caf1/varatiradonida.pdfIn PDF document text
    • https://s3.amazonaws.com/bulolimepol/fenawibofamun.pdfIn PDF document text
    • https://s3.amazonaws.com/wexukufedepim/majoketomit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4b900f8f-e1a9-4fe1-aef9-87254b790e07/gofiwewumar.pdfIn PDF document text
    • https://s3.amazonaws.com/gotenukevepunin/being_a_man_paul_theroux_soapstone.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/642a808b-fdd4-4f4b-9869-fb034a8ca5c0/xofuwosu.pdfIn PDF document text
    • https://s3.amazonaws.com/voxipanovigepiv/adverbs_of_place.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_off0000c513.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC513 5828 bytes
SHA-256: c0d7bc82348651fb2c134f02d2107e36004dd12fb39e0a34269231e8c37d72af
font_01_sfnt_off0000d8c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8C7 9884 bytes
SHA-256: c6e3bd91e3759dd85f545bcc10f929e31d9198d77c84df6d0de06eb2cac74c84

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