Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b29e24046ef1db8…

MALICIOUS

PDF

81.9 KB Created: 2021-03-17 02:57:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 4b5fbc7e7bc0227f67ad7849cef703b8 SHA-1: 2ad8f433eef417e91650276f86bbc8d175162f0e SHA-256: 1b29e24046ef1db8fb1ebf483b484808ef84697a8dd4f5f1448a2562921ffc5c
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 0.9997

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
  • 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://crophysi.ru/strik?utm_term=how+to+use+macro+in+excel+2013 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4469852/normal_5fca15a157f3f.pdfIn PDF document text
    • http://muzibatixabu.mypressonline.com/niv_study_bible_leather_engraved.pdfIn PDF document text
    • https://pexipepokebi.weebly.com/uploads/1/3/4/6/134627497/tagigidev_tatitikibasa.pdfIn PDF document text
    • https://jogosoti.weebly.com/uploads/1/3/1/4/131453036/monixejevuvijutu.pdfIn PDF document text
    • http://theporte.xyz/best_couples_counseling_booksg22gv.pdfIn PDF document text
    • http://imedo.ru/principales_tecnicas_o_metodos_para_la_recoleccion_de_datos_estadisticos6z56u.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478716/normal_6012369908f4f.pdfIn PDF document text
    • http://lienforkid.com/best_vegetarian_side_dishes_for_thanksgivingmy1x3.pdfIn PDF document text
    • http://mowogaw.mypressonline.com/limejuderitivojomet.pdfIn PDF document text
    • http://nitiwomifigurod.mygamesonline.org/how_to_light_a_coleman_propane_catalytic_heater.pdfIn PDF document text
    • https://susakatevasek.weebly.com/uploads/1/3/4/8/134871092/bd73634b75b.pdfIn PDF document text
    • http://jiwabozaxexe.mypressonline.com/l_adjectif_indfini.pdfIn PDF document text
    • https://sakolepak.weebly.com/uploads/1/3/4/5/134588428/rolimegaleta.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4527345/normal_5fda4a5297821.pdfIn PDF document text
    • http://dayzcommunity.info/10473595089bkb9k.pdfIn PDF document text
    • https://goxatuzibifonev.weebly.com/uploads/1/3/0/7/130739188/tevoruma-newat.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372963/normal_603448a4b3b53.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://64e18f06-8a0e-4dc1-8427-9dd81b4bff36.filesusr.com/ugd/baa514_34884e5701764c05af41efa6dd6af232.pdf?index=trueIn PDF document text
    • https://51bf459c-6b46-41b0-863f-532cf8a77e0d.filesusr.com/ugd/2eedf1_e93f35248aa04b66adf6c7f3d29e1e19.pdf?index=trueIn PDF document text
    • https://bb74f61c-7045-47bf-9a7e-968101ee373e.filesusr.com/ugd/81ef4b_4468aa0e6ffc41b2a515bac85c68527b.pdf?index=trueIn PDF document text
    • http://xuvekixofeku.onlinewebshop.net/lavutur.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_off00010214.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10214 5556 bytes
SHA-256: 55b8054bdc4984745ae8431fd66a949000f367f9030884e51bb86912eb63322d
font_01_sfnt_off000114f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x114F5 10972 bytes
SHA-256: 01a7eef11642623c3c995e318d0164e9cb223f6e21f610606a79aedffa819417

Open this report in the interactive analyzer, or submit your own file for analysis.