Malicious PDF — malware analysis report

Static analysis result for SHA-256 080fd853b8bb58d6…

MALICIOUS

PDF

113.1 KB Created: 2021-04-21 21:27:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: f53a9d6bef69224a4fb148456748d3b0 SHA-1: 77aa28e3e25dedc0672327c605634ca073cb6040 SHA-256: 080fd853b8bb58d6dda39c90c81bc90d7eb037f0a9806a330c6abcf7a8250b43
66 Risk Score

Malware Insights

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

The PDF document contains embedded URLs that lead to suspicious domains, suggesting a phishing or malware distribution attempt. The ML classifier strongly flagged this PDF as malicious, and the 'PDF_SEO_DISPOSABLE_LINK_FARM' heuristic indicates a pattern of using disposable hosting for link farms. While no scripts were directly extracted, the presence of numerous suspicious URLs points to an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 4

  • 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://fokemale.ru/strik?utm_term=how+to+change+dualshock+3+battery PDF link annotation
    • http://tesekiwig.scienceontheweb.net/short_and_long_term_memory.pdfIn PDF document text
    • http://kobodesuwid.getenjoyment.net/bible_quiz_book_of_genesis.pdfIn PDF document text
    • http://metiwizonud.getenjoyment.net/understanding_life_sciences_grade_12_third_edition.pdfIn PDF document text
    • http://xapowuxif.mywebcommunity.org/dijakipelarufemaj.pdfIn PDF document text
    • http://bakavorun.getenjoyment.net/oral_lichen_planus_case_report.pdfIn PDF document text
    • http://wowit.pro/517411909580xt6y.pdfIn PDF document text
    • http://kugewezebuvigiw.mygamesonline.org/number_line_1_20.pdfIn PDF document text
    • http://wubowobipevoto.mywebcommunity.org/what_does_jupiter_in_birth_chart_mean.pdfIn PDF document text
    • http://todayit.pro/97627698006t08al.pdfIn PDF document text
    • http://techanomic.com/voltage_regulation_and_efficiency_of_transformerjzenm.pdfIn PDF document text
    • http://thecaffeinatedstudent.com/basic_math_skills_assessment_printable9ob1w.pdfIn PDF document text
    • http://xviiivbgz.com/que_fue_el_nazismo_resumenftqfv.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://29ca30ec-7ad4-487f-8637-d2d67f3a323c.filesusr.com/ugd/10b11f_96048817ce8c4fdc9f7acbc76a06c662.pdf?index=trueIn PDF document text
    • http://satawakerexe.atwebpages.com/kaxibokig.pdfIn PDF document text
    • https://d5bea983-5bca-41ba-aae6-6b688785cc77.filesusr.com/ugd/9ec29b_25c6267f2d8946ea93ef1acf82b29897.pdf?index=trueIn PDF document text
    • http://vegubom.atwebpages.com/lavolebojivisutumupo.pdfIn PDF document text
    • https://f8e303d0-f350-43d2-b7c3-f886ef13ec25.filesusr.com/ugd/1bb397_a37cdfd0ff414f7e8a9b76aab21022f7.pdf?index=trueIn PDF document text
    • http://givetupazowo.onlinewebshop.net/wosaxuwapujiguxato.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00014933.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14933 4288 bytes
SHA-256: 497ed2080dcf6bd4578258764d872b66b4a504ee0169c164cf8a62259f95f8c7
font_01_sfnt_off0001584b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1584B 5724 bytes
SHA-256: 293c73512b961b8c52f089e58abcec19bb4e22b503565fa59d4d5f82f8017fea
font_02_sfnt_off00016bcc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16BCC 1800 bytes
SHA-256: a36eee06fef6ce219692c4ec918276ac99413e4fd1e3666e4031624f9289d620
font_03_sfnt_off00017459.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17459 12408 bytes
SHA-256: 0b76c78a4af5e07007e4421251ed900914db738cb906ee6ef939bcc15b304f44
font_04_sfnt_off00019edc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19EDC 16340 bytes
SHA-256: 4f9bddd8120402856594b33adaeac6aa436e26f5eb63b748bf1666df64cd7ce8

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