Malicious PDF — malware analysis report

Static analysis result for SHA-256 e032ee4652fe2052…

MALICIOUS

PDF

85.3 KB Created: 2021-03-05 15:27:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 4256dfd710e47e06ece614e3e828bb1b SHA-1: b1927a88e1d8de286d7ea7a1792db3f69ee1a11c SHA-256: e032ee4652fe20520c866ffeae5edf772219354f445198ed8d003020fed1d10e
126 Risk Score

Malware Insights

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

The PDF contains an embedded URL that redirects to a website designed to appear as a search result, likely to phish for user credentials or lead them to further malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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://xajibur.ru/wb?keyword=la%20divina%20comedia%20el%20paraiso%20resumen%20por%20cantos PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4481539/normal_602d01c50971c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474989/normal_600e28120a9a6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490934/normal_5fdda3402d17d.pdfIn PDF document text
    • http://rozogididibusar.sportsontheweb.net/nuzeduwusoxenowivowibiv.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4493227/normal_5ff2fc50d692c.pdfIn PDF document text
    • http://naturaleone.space/jquery_dialog_appendto_form8kubo.pdfIn PDF document text
    • http://nidikasuzarola.iblogger.org/how_many_miles_will_a_cummins_5.9_last.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404739/normal_6033847053b10.pdfIn PDF document text
    • http://dietnatur.fun/multiplying_and_dividing_exponents_free_worksheetslyacm.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451368/normal_60064d2d0d1c5.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
    • http://zadosuwiwebuw.epizy.com/70846417384.pdfIn PDF document text
    • http://pejefovad.epizy.com/saucony_guide_iso_10_damen.pdfIn PDF document text
    • https://00407fa8-a9ef-4b78-9bbe-46147fc8acf6.filesusr.com/ugd/5ecadc_73ac670635f9409084afe8cca7cab7bc.pdf?index=trueIn PDF document text
    • http://mopiluganaloriz.epizy.com/baofeng_uv_82_wp_programming_software.pdfIn PDF document text
    • https://73a1781f-5c9f-4c76-8a11-a8e8c44f336a.filesusr.com/ugd/d9f7b5_34a43e531aad42ca85ede66a123e95d2.pdf?index=trueIn PDF document text
    • http://setuvufijub.epizy.com/business_information_systems_management_jobs.pdfIn PDF document text
    • http://wififeju.atwebpages.com/what_is_the_musical_texture_in_a_gregorian_chant.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010005.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10005 5104 bytes
SHA-256: dec6d99151275a493dff67bd24abca3523a56c832c969650c128d7de85edc6ab
font_01_sfnt_off0001113d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1113D 11960 bytes
SHA-256: d166dbe1cd3b0c2980d79c263d46cf71ed5a199fcdfa95c856f1a3e569e4bf62
font_02_sfnt_off000137c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x137C6 4324 bytes
SHA-256: ad623bc7c681097dfa1224999cf6cc6072d3ca9a137655dc1129b0261f0b357c

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