Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d5feabea7e16e3d…

MALICIOUS

PDF

77.5 KB Created: 2021-04-08 22:19:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 72f00f1972e17c6ef1460c653f2c9b9e SHA-1: 44df17364b60d3a1104ce4f9205c1760cd3f94a6 SHA-256: 1d5feabea7e16e3d45c17afe4717b1be0c73497ae1b83bd6ca00adb1280da7d1
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with one specifically appearing as a search query lure. The ML classifier and ClamAV detection strongly indicate maliciousness, likely related to phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://botokaw.ru/strik?utm_term=what+type+of+animal+is+bagheera+in+the+jungle+book PDF link annotation
    • https://xafudilolara.weebly.com/uploads/1/3/4/7/134744509/guwelamusemuv.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484807/normal_5ff159ede1475.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4472208/normal_5fd3a1e38ec71.pdfIn PDF document text
    • http://janusadow.mygamesonline.org/10357200896.pdfIn PDF document text
    • http://wajazenizur.mywebcommunity.org/wotufemarebopew.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383321/normal_602a5bfc12179.pdfIn PDF document text
    • http://ridaxaki.mywebcommunity.org/kimanuxetipoxubeb.pdfIn PDF document text
    • http://jesopejasunu.22web.org/wurejunenumokudafixokijes.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374519/normal_600998c289feb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489422/normal_5fcd35ce2e7c7.pdfIn PDF document text
    • https://litefobobufi.weebly.com/uploads/1/3/5/3/135326689/0e62231.pdfIn PDF document text
    • https://japarikadag.weebly.com/uploads/1/3/4/1/134108792/kojiduva.pdfIn PDF document text
    • https://xozavefo.weebly.com/uploads/1/3/4/0/134018900/961135.pdfIn PDF document text
    • https://birugenok.weebly.com/uploads/1/3/4/6/134632973/vupetuvaferewum-vugaxanedo-sales-tabinug.pdfIn PDF document text
    • http://tobalalupuvobiv.iblogger.org/what_is_the_story_of_martha_in_the_bible.pdfIn PDF document text
    • http://mazikopipovix.mywebcommunity.org/xunubodajixafasog.pdfIn PDF document text
    • https://fexupewoxi.weebly.com/uploads/1/3/4/6/134619994/jivedod.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wuzegez.epizy.com/suffixes_worksheets_grade_5.pdfIn PDF document text
    • http://wivufaw.epizy.com/woleronefoxopexifasonivup.pdfIn PDF document text
    • http://mikuwetixiwu.rf.gd/sudapatu.pdfIn PDF document text
    • http://tolevekup.epizy.com/cheat_droid_old_version_apk.pdfIn PDF document text
    • http://wewolasa.epizy.com/vadobugefabegusakakuz.pdfIn PDF document text
    • http://buladuwe.rf.gd/what_to_do_if_your_thermostat_is_not_working.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eea2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEA2 5708 bytes
SHA-256: 36ac04b08192f08436d726e654c529d3c3c4aab4698d8b3f059fd029970b8704
font_01_sfnt_off00010201.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10201 10544 bytes
SHA-256: 2a7547722023c13395a47ab2e8e4e64d5ef0f2ecce9f6f0570a710bcc16e9c58

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