Malicious PDF — malware analysis report

Static analysis result for SHA-256 9000d1c10832a6b3…

MALICIOUS

PDF

92.0 KB Created: 2021-03-15 11:11:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 24c9be2b105611b9fb18d62e5e0d32bd SHA-1: 35eacab1f7d3346dd5cd2912a82df243e2ca61d7 SHA-256: 9000d1c10832a6b35c6e7d862cc4d8bc0122f45f6dc472b7b0d828d553e17c13
186 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many hosted on disposable domains, suggesting a link farm or SEO poisoning tactic. The embedded URLs and the heuristic firings indicate an attempt to redirect users to malicious websites. While no scripts were explicitly extracted, the PDF structure and the presence of external links are indicative of a phishing or redirection scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9912

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://botokaw.ru/strik?utm_term=orthodox+religion+meaning+in+urdu PDF link annotation
    • https://satobolusiv.weebly.com/uploads/1/3/1/3/131398412/4904355.pdfIn PDF document text
    • https://kigodobegolalib.weebly.com/uploads/1/3/1/4/131453325/kuboluf.pdfIn PDF document text
    • https://cdn.sqhk.co/nuzinipaz/jdhfxjg/happy_street_food_plaza_ahmedabad.pdfIn PDF document text
    • https://cdn.sqhk.co/rozamulev/fhcsBOG/candy_crush_saga_level_5326.pdfIn PDF document text
    • http://reflectionss.space/rebels_city_of_indra_the_story_of_lex_and_liviayfkn8.pdfIn PDF document text
    • https://ludolukek.weebly.com/uploads/1/3/4/6/134699908/2096970.pdfIn PDF document text
    • https://cdn.sqhk.co/jumifokujuje/igic7ih/zenededamopivafuxidu.pdfIn PDF document text
    • https://roralolew.weebly.com/uploads/1/3/0/7/130775143/8745cec29ffd.pdfIn PDF document text
    • https://rorefodelubo.weebly.com/uploads/1/3/1/4/131452934/xifexufuvox.pdfIn PDF document text
    • http://about-central.com/gigabyte_ga_p35_s3g_manualusxa2.pdfIn PDF document text
    • http://tpdreport.com/149217024743ptm9.pdfIn PDF document text
    • https://suxamoka.weebly.com/uploads/1/3/4/8/134876373/vaxugafedixevaj-lunijije.pdfIn PDF document text
    • https://kaxorude.weebly.com/uploads/1/3/4/0/134095875/3006399.pdfIn PDF document text
    • https://cdn.sqhk.co/wejemabip/Ghav7gd/xibizokotimamojovakogiru.pdfIn PDF document text
    • http://hookup681.site/popojuvade1c9z4.pdfIn PDF document text
    • http://erethiztzj.space/free_basketball_trading_card_templatex3yx4.pdfIn PDF document text
    • https://cdn.sqhk.co/vobevufubito/lkrBokr/drill_guide_ace_hardware.pdfIn PDF document text
    • https://pigiwikabulate.weebly.com/uploads/1/3/1/8/131856715/a6074f5109.pdfIn PDF document text
    • https://vaxokivov.weebly.com/uploads/1/3/1/4/131453734/42d3d5c854331.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://945c5b1a-9feb-4a08-b72d-c905ca1b1520.filesusr.com/ugd/27135d_74959de09ba944c1aed0c8bc22e0e7ff.pdf?index=trueIn PDF document text
    • https://3c3713de-992c-4571-92b4-00afcb8cb2c1.filesusr.com/ugd/9dbdb2_78acac876ece47e78cfd93bcb67bc5ce.pdf?index=trueIn PDF document text
    • https://cee4a208-09ac-40e0-983f-4c2cc776acbe.filesusr.com/ugd/5ed537_5fd8f8662ea74759ab543011823ca525.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/welanisowari/jason_and_the_argonauts_movie_2010.pdfIn PDF document text
    • https://s3.amazonaws.com/tozaduliwubega/72393267183.pdfIn PDF document text
    • https://s3.amazonaws.com/nijosinizo/journal_citation_reports_science_edition.pdfIn PDF document text
    • https://254a6a59-343e-4b7e-907c-c4819e171fff.filesusr.com/ugd/decf6f_1cbf68985beb47fb9b8d0835dc170e82.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wizuluworafid/73928041749.pdfIn PDF document text
    • https://1e8c0764-4a0f-46ab-84a2-5f63a8a44928.filesusr.com/ugd/6a0acf_49836556e26e429dab82bdf916acbd4f.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/pobixedele/17930470424.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f8b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8B2 5036 bytes
SHA-256: 18f502fe081c25af54508121ac452f0d85ecc1ea82c68c4c11bbb55529e65272
font_01_sfnt_off000109a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109A7 11424 bytes
SHA-256: b8a50c215015004facf8dde61808734ebc24771be1f0a001542b9d213f62ddeb
font_02_sfnt_off00013057.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13057 20972 bytes
SHA-256: 655bbb1fa5f4fd7c503ff01d9afdcde9b1a80d461463ffc12fe8e61391e3dcb0
font_03_sfnt_off00015362.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15362 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2