Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e64902943ca29ff…

MALICIOUS

PDF

94.9 KB Created: 2021-04-05 03:04:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 194e1ea933e8c07ed139d7baa7fc23e3 SHA-1: c597c96a72eb16ac6a474fe66af5c7bfb9ab34ea SHA-256: 0e64902943ca29ff56c610bcd9756ca18aab40279c7ddd8190cce4431d7ae82f
214 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with several pointing to known malicious redirectors or link farms. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. No scripts were extracted, but the PDF structure itself is weaponized to direct users to harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://crophysi.ru/strik?utm_term=because+of+winn+dixie+test+answers In PDF document text
    • http://italywow.info/peter_m_senge_five_disciplinesfkksp.pdfIn PDF document text
    • http://tedoterolileme.iblogger.org/bosch_500_series_dishwasher_user_guide.pdfIn PDF document text
    • http://nosinoski.shop/sofewumezagadelipijugs08g.pdfIn PDF document text
    • http://fulisipojuzobog.22web.org/mofogijupat.pdfIn PDF document text
    • https://wutekeli.weebly.com/uploads/1/3/1/3/131379380/2822b731aa9b3.pdfIn PDF document text
    • http://instasale.company/network_guide_to_networks_8th_edition_access_code0jx87.pdfIn PDF document text
    • https://gijojipile.weebly.com/uploads/1/3/1/3/131381352/kijubulugeza-kotitusunaw-kenogiwodu-pilidovedugo.pdfIn PDF document text
    • https://jovopunok.weebly.com/uploads/1/3/4/8/134869647/guxupuletejife.pdfIn PDF document text
    • http://botoboboxo.22web.org/thread_extrusion_in_sheet_metal.pdfIn PDF document text
    • https://wixifaxofosa.weebly.com/uploads/1/3/1/3/131398582/9781116.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://68f2566a-c586-4d15-a5d1-3a72044c38f3.filesusr.com/ugd/ecec20_90515a7fa9dc4c6c87134f68ca76073c.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/daraniwekamidir/ashokan_farewell_viola_solo_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/farowug/quran_with_urdu_translation.pdfIn PDF document text
    • https://s3.amazonaws.com/budovewesekaz/punctuation_rules_with_examples_ppt.pdfIn PDF document text
    • https://s3.amazonaws.com/suzixegazunow/sketch_challenge_ideas.pdfIn PDF document text
    • https://s3.amazonaws.com/gavapozalilup/takilosoxaxavesezelamus.pdfIn PDF document text
    • https://s3.amazonaws.com/nisiwanolom/characters_in_the_story_the_open_window.pdfIn PDF document text
    • http://labireninofut.epizy.com/conceptos_tradicionales_del_anlisis_econmico.pdfIn PDF document text
    • https://8035c368-62b5-4e0f-b07c-73fd2baf85c9.filesusr.com/ugd/2ee8d4_bc185eb831d54e9d90eba4d20c53fabf.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/loxopudizus/politics_for_dummies_2020.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011f7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F7D 5192 bytes
SHA-256: a07241a33645b641ade95f6caab7de8d9c4406e5751c00d58737e08b30bb00b4
font_01_sfnt_off00013151.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13151 11888 bytes
SHA-256: 072ee3ed852f866d4455b6f57496c5eb3ce1d18926e9f7c6c03d00230c2cc4bb
font_02_sfnt_off0001593b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1593B 16036 bytes
SHA-256: 35d3440dae1ebc896564e4e6f70ea95aa3a30a1ac603c7fffbb21b68b8b72e2f

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