Malicious PDF — malware analysis report

Static analysis result for SHA-256 48ed4d805695daa9…

MALICIOUS

PDF

131.2 KB Created: 2021-04-06 15:13:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: dcaa19a16a64f455632e715cb08932fc SHA-1: d0d6ebe6c32f0442d7635a3ffb29357a9ae4216b SHA-256: 48ed4d805695daa962cd5bdb2a7ee5661b9bfa89b074df1298e9fc93181f2199
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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
  • 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://golowaki.ru/strik?utm_term=jj+lin+practice+love+lyrics PDF link annotation
    • https://gufakapefevem.weebly.com/uploads/1/3/5/9/135994046/c47f32.pdfIn PDF document text
    • https://tuvitewolejuxow.weebly.com/uploads/1/3/4/6/134615754/5f5d7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456378/normal_60469722a54d9.pdfIn PDF document text
    • https://vaturelola.weebly.com/uploads/1/3/4/7/134704713/d5695610e.pdfIn PDF document text
    • http://tryplafond.xyz/39419779026elgzi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367622/normal_5fdbbf5971ecc.pdfIn PDF document text
    • http://lnstagram-copyright-confirms.com/does_kindle_paperwhite_have_a_dictionaryzkx1g.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475571/normal_601f8d49cc222.pdfIn PDF document text
    • http://varietystore.website/78532565244sg1fu.pdfIn PDF document text
    • https://wobajaxeme.weebly.com/uploads/1/3/4/3/134350369/d76004cec2311.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370540/normal_601a2fadc1a50.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427821/normal_5fc65700b7d73.pdfIn PDF document text
    • http://espaceabone.com/190990046532wygi.pdfIn PDF document text
    • https://kitedagipan.weebly.com/uploads/1/3/4/8/134892955/feriridujixobuponej.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sasejas.epizy.com/92840172947.pdfIn PDF document text
    • http://navepufukoxo.rf.gd/pukamanaziguzaraluwam.pdfIn PDF document text
    • http://fokavugepiromi.epizy.com/bangla_comedy_natok.pdfIn PDF document text
    • http://duwawadava.rf.gd/guwivokarokoze.pdfIn PDF document text
    • http://dexidije.epizy.com/normal_neurological_exam_template.pdfIn PDF document text
    • http://sasilefup.rf.gd/jelikowofur.pdfIn PDF document text
    • http://gibilumopujilot.epizy.com/national_youth_service_online_application_form_2020.pdfIn PDF document text
    • http://mewuxugeje.epizy.com/punctuated_equilibrium_model_of_evolution_with_the_gradualism.pdfIn PDF document text
    • http://sefamuw.rf.gd/catalogo_hinode_ciclo_3_2020.pdfIn PDF document text
    • http://gofuxanuwuj.rf.gd/20876148590.pdfIn PDF document text
    • http://gukupexokopiwug.epizy.com/81794336634.pdfIn PDF document text
    • http://modotiwavuw.epizy.com/what_order_should_i_read_alex_cross_books.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_off0001070a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1070A 63516 bytes
SHA-256: 2d72ff32c1828c2afa4ca2509b8270aa7e112585b526adc29176b1bb8f116060
font_01_sfnt_off0001c298.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1C298 5152 bytes
SHA-256: 7186bd2b9a48ee472d8e1b81e056b5ac7f59bdc8958d74bbebbee4f5b0bf48d8
font_02_sfnt_off0001d441.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1D441 13424 bytes
SHA-256: 55ae614b0ff72a814aa93d363d81dc26a3e18280eb1b3b387d986dda59471159

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