Malicious PDF — malware analysis report

Static analysis result for SHA-256 c890e5015f5ba1a5…

MALICIOUS

PDF

72.4 KB Created: 2021-02-14 15:44:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: ea0075b93528df87534a5ef867e55816 SHA-1: 30525055cfad5fdc4cbaa4c9fa01602f49476da5 SHA-256: c890e5015f5ba1a53df3352d69d962dae1cbc627bb135b9a92f670173bbfeab1
156 Risk Score

Malware Insights

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

The PDF file was identified as malicious by multiple heuristics, including ClamAV and an ML classifier, indicating it is likely a phishing or spam document. It contains a large number of external links, with one pointing to 'https://seumenha.ru/123?utm_term=home+decorators+collection+blinds+manual', suggesting a link farm or phishing lure. The presence of embedded URLs and the PDF_SEO_LINK_FARM heuristic further support the attack pattern of directing users to malicious or spam content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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.
  • 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://seumenha.ru/123?utm_term=home+decorators+collection+blinds+manual PDF link annotation
    • http://blog-uniswap.org/imperatives_esl_worksheet5nnpw.pdfIn PDF document text
    • http://probkin34.xyz/math_problems_with_answersyy4up.pdfIn PDF document text
    • https://veduwasa.weebly.com/uploads/1/3/1/6/131637496/8099619.pdfIn PDF document text
    • https://xugubevowasisof.weebly.com/uploads/1/3/4/8/134885616/7a9b694fdbe.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/muxozuvalubi/67770989069.pdfIn PDF document text
    • https://s3.amazonaws.com/lemefofutomapox/ruxatodelivute.pdfIn PDF document text
    • https://s3.amazonaws.com/bexolamabad/91973319428.pdfIn PDF document text
    • https://s3.amazonaws.com/veledabejufi/ofsted_inspection_reports_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/dudujopixejikug/orthographic_projection_questions.pdfIn PDF document text
    • https://s3.amazonaws.com/bisute/ireport_3._0._0.pdfIn PDF document text
    • https://s3.amazonaws.com/gomaxod/linear_equations_word_problems_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/nodetuxapabara/87300737296.pdfIn PDF document text
    • https://s3.amazonaws.com/fumiposamisur/federalism_class_11_question_answer.pdfIn PDF document text
    • https://s3.amazonaws.com/xazarujokemus/88679357825.pdfIn PDF document text
    • https://s3.amazonaws.com/wiwamoxamo/free_math_worksheets_fractions_8th_grade.pdfIn PDF document text
    • https://s3.amazonaws.com/desenaz/43449286379.pdfIn PDF document text
    • https://s3.amazonaws.com/wutogugej/good_food_guide_gift_voucher.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d0d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0D6 5068 bytes
SHA-256: f24fc3628e56afe19e5c1903fd018158c86b05961d03f7bec36b3fd90fc77f12
font_01_sfnt_off0000e1e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1E7 10648 bytes
SHA-256: db88d1987c7c5841e95653bddc363c618c9ce6ff5ecda8f931b9748402da9d8e
font_02_sfnt_off000105dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x105DD 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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