Malicious PDF — malware analysis report

Static analysis result for SHA-256 32b296f16312b563…

MALICIOUS

PDF

67.1 KB Created: 2021-03-06 11:10:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 0f23db5130bcac4392b81b7061264f82 SHA-1: de765625381310379d6bf156cb6789f8aa2b2f4f SHA-256: 32b296f16312b563671ef192760dfff0ea77dfe67a7e9bcb3fac2c16525b4860
186 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including ML classification and ClamAV detection, specifically identifying it as a credential phishing attempt impersonating 'DhL'. The document contains numerous embedded URLs, many of which point to disposable hosting services and redirectors, suggesting a link farm designed to obscure the final phishing destination. The presence of external URIs and the link farm heuristic indicate a strong intent to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://jixejuterekafiw.weebly.com/uploads/1/3/4/5/134508928/3859482.pdf.
  • 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://dugedepap.ru/wix?keyword=adjectives+that+start+with+u+in+spanish PDF link annotation
    • https://jixejuterekafiw.weebly.com/uploads/1/3/4/5/134508928/3859482.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4390995/normal_5fff7a304c2a8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474987/normal_5fcb1732a0986.pdfIn PDF document text
    • http://webpost.pro/743606318924s2my.pdfIn PDF document text
    • https://givurubikuz.weebly.com/uploads/1/3/1/4/131482907/tubiwojameb.pdfIn PDF document text
    • http://winnerslm.space/55506940996jj3rv.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366011/normal_602547ab5406b.pdfIn PDF document text
    • https://xavapijiwo.weebly.com/uploads/1/3/3/9/133997403/3fd0aeef8ff7.pdfIn PDF document text
    • https://votujejigep.weebly.com/uploads/1/3/1/3/131380583/4946670.pdfIn PDF document text
    • https://getukesi.weebly.com/uploads/1/3/4/7/134735407/2662654.pdfIn PDF document text
    • http://promoocaoameericanas.com/behold_a_pale_horsedz21c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378846/normal_5ffcc6a077a96.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370744/normal_602de2651f0be.pdfIn PDF document text
    • http://businessoutsourcing.org/stand_by_me_official_movie_postert59wj.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://ligixuz.rf.gd/65402126592.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b1d40482-f6c9-4d33-a268-ab4e1cf2ab9d/69775628432.pdfIn PDF document text
    • http://jitofatukawej.rf.gd/mitipudizivaguwagatazagof.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c17a48fb-5d66-4a56-a633-fc011b8e6d66/faxuxigexopu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e8e02d4e-9906-47d9-8b37-f56b210e8e9e/what_is_the_summary_of_romeo_and_juliet_act_2.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/282eb8e2-fa42-4406-b46a-e050e91fa1b4/dell_e6410_battery_price.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_off0000c9c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9C1 5348 bytes
SHA-256: bae66d6c8a61956141dc77ebd76942c764be7474732e935e98c7806e55f33c64
font_01_sfnt_off0000dc08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC08 10204 bytes
SHA-256: e9f36ff359f9eec3608e678281543214fe0cf03da52450646e0bf0681684b496