Malicious PDF — malware analysis report

Static analysis result for SHA-256 3152515b76cbd827…

MALICIOUS

PDF

86.6 KB Created: 2021-03-23 23:28:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 06a9f9131fe9ed82fb416d1a3611492d SHA-1: 8c3667cd109dc87d06819e696ca1b4fa3b1b935d SHA-256: 3152515b76cbd82740af4f0ada322ac6ada8b511675540bb65d7e627bc78174f
126 Risk Score

Malware Insights

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

This PDF file was flagged by ML classifiers and ClamAV as malicious, exhibiting characteristics of a phishing or malware distribution lure. The presence of numerous external URIs, including a link farm on disposable hosting, suggests an attempt to redirect users to malicious sites. While no scripts were explicitly extracted, the PDF structure and embedded URLs indicate a likely intent to exploit users through deceptive links, potentially leading to further compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://jottigo.ru/wix?keyword=pink+kitchenaid+mixer+5+qt PDF link annotation
    • https://cdn.sqhk.co/wanoposuj/jd2hakF/92864231796.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490001/normal_5fe317f058cc7.pdfIn PDF document text
    • http://nufudotaruja.iblogger.org/referazagubepagilobebaz.pdfIn PDF document text
    • http://vkrowl.com/disorientasi_adalahiu6tm.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370317/normal_605517e095e86.pdfIn PDF document text
    • https://cdn.sqhk.co/weruvewo/gh9Qge5/global_information_technology_report_wef.pdfIn PDF document text
    • http://saratov.ooo/ingilizce_konuma_klavuzuozr8w.pdfIn PDF document text
    • http://maykistore.ru/buxany94fy.pdfIn PDF document text
    • http://meblik.su/millermatic_211_mig_welder_specs1exda.pdfIn PDF document text
    • https://cdn.sqhk.co/tekuligote/jd3zpig/14623366069.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412767/normal_605476f359e8f.pdfIn PDF document text
    • http://national-verifyteam.com/cuales_son_los_sintomas_de_cancer_de_estomago_en_mujeresvwsie.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://maridilalo.rf.gd/zorakipezewela.pdfIn PDF document text
    • https://394fded3-a37f-45fe-8092-07e0884d2d31.filesusr.com/ugd/bdbc91_244978a89471473faa43c1f0c3324fed.pdf?index=trueIn PDF document text
    • http://gatamabudawuf.epizy.com/17644737129.pdfIn PDF document text
    • http://jisukizopupez.rf.gd/ballade_pour_adeline_easy_piano_sheet.pdfIn PDF document text
    • https://a7da3e60-63c8-46c1-a846-eab7df628ed2.filesusr.com/ugd/bba345_5423c72213304ee89b69e79f02c81a65.pdf?index=trueIn PDF document text
    • https://3176e400-c268-4dc0-8d69-08eae86937f8.filesusr.com/ugd/ea2f88_232dfdf9d84842cda3a6608dcc053b31.pdf?index=trueIn PDF document text
    • https://d4180a97-8dd0-4bf1-9e2f-d1b128d1a64d.filesusr.com/ugd/ae059d_87b6a3e78f6b469bbf94a142a1d6c7ff.pdf?index=trueIn PDF document text
    • https://938a05da-450f-421e-a59b-0448473a402a.filesusr.com/ugd/cb5dea_91a72376527f4765b3f07b072889d846.pdf?index=trueIn PDF document text
    • https://b9eb3541-094c-4606-b101-17c2291fd6e1.filesusr.com/ugd/a18601_6756ec967d964b8f914ee8e7b2a042d7.pdf?index=trueIn PDF document text
    • http://wowijikozo.epizy.com/gesonilitiwivup.pdfIn PDF document text
    • https://6440a9f6-5e82-4153-977b-4ffe9374ec4a.filesusr.com/ugd/7182f3_e9ee5fd7f69f4c93b3a6c308e43a58a8.pdf?index=trueIn PDF document text
    • https://5e20aa6b-77ef-4f11-9344-5454fb7c649c.filesusr.com/ugd/fb3aa9_030fd4ce7c374e5d85a273baa81b9f8f.pdf?index=trueIn 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_off00011207.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11207 5352 bytes
SHA-256: 1741320aa87408489bb956a1daab1280f963d54023ec0943c708f162b1ffe5b2
font_01_sfnt_off00012418.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12418 12324 bytes
SHA-256: e604b7d22a2d9c29cd4ccacf394c97ac3d2b1c26cf821a511fe201e0c0cf0c6c