Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3b6e4a7ac8c0176…

MALICIOUS

PDF

90.5 KB Created: 2021-04-08 01:48:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 01354e76a1b70f319dfebb5db4dd6e89 SHA-1: 15ef9025cd5292fe297582dadc528f02931e4ac9 SHA-256: d3b6e4a7ac8c017653fabcf05e9ae2dc5d0e284ce09c705a2b05affd7085ab2e
126 Risk Score

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 0.9993

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://xezojetit.ru/strik?utm_term=ms+word+2016+practical+exercises+pdf PDF link annotation
    • http://pipavinekiga.mywebcommunity.org/example_of_memorandum_letter.pdfIn PDF document text
    • https://cdn.sqhk.co/jutafegobexe/jjhbKGA/facebook_logo_for_business_card_use.pdfIn PDF document text
    • http://scm03.ru/126511356693rppn.pdfIn PDF document text
    • https://cdn.sqhk.co/bisidilit/jVhahfU/90204408199.pdfIn PDF document text
    • https://wotuterivakevom.weebly.com/uploads/1/3/4/6/134608936/9194225.pdfIn PDF document text
    • http://folugomobok.getenjoyment.net/wukewomodopudo.pdfIn PDF document text
    • http://bathforlegs.xyz/5754373730vt4kf.pdfIn PDF document text
    • http://chtotakoevuxom.biz/verb_tenses_definitions1j7s.pdfIn PDF document text
    • http://rasezatoxefu.mygamesonline.org/12892428451.pdfIn PDF document text
    • https://sozulidalipidin.weebly.com/uploads/1/3/1/4/131437061/zelasiweb-difofizarojax-lupobela.pdfIn PDF document text
    • https://cdn.sqhk.co/tunaluvum/rWiawwa/solar_system_planets_names_in_kannada.pdfIn PDF document text
    • https://cdn.sqhk.co/zatejurix/jdjg6ie/spacex_crew_dragon_destroyed.pdfIn PDF document text
    • http://golomashvanna.xyz/30757237233zors3.pdfIn PDF document text
    • http://covid-19online.site/692320939158k5vs.pdfIn PDF document text
    • https://mulafixi.weebly.com/uploads/1/3/4/3/134317856/lowagetube.pdfIn PDF document text
    • https://cdn.sqhk.co/vabalogu/gdLneuH/pofewagajis.pdfIn PDF document text
    • http://medyayazilimtr.com/buveweturarokukatoihttb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://roporuti.onlinewebshop.net/ferala.pdfIn PDF document text
    • https://6c8027e1-9878-41b3-a9ef-32ba2b6bcd02.filesusr.com/ugd/185811_684387e323e24f4d8199bccbca0cc292.pdf?index=trueIn PDF document text
    • https://a72b158e-cead-41d6-a0b3-8518216316a4.filesusr.com/ugd/35c6e2_fdd1c5781d6c474991498f6b698d7ba1.pdf?index=trueIn PDF document text
    • https://c02a3fa2-970f-4384-b4fa-7a60184a1b73.filesusr.com/ugd/1da3fe_c8455a35ad0d40a6ab29d953fa034f41.pdf?index=trueIn PDF document text
    • https://82c1a4a6-0aea-44ab-842b-07cb5bdde860.filesusr.com/ugd/aafee9_081358da085a44c1bb1db4bd556e30eb.pdf?index=trueIn PDF document text
    • http://jitawidavez.atwebpages.com/jubumusejutefibetaniko.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_off000121e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x121E6 5796 bytes
SHA-256: 8a9d65fd7b3e0845f7213939a13fe4a566d4088abc49127244c343222c86ac1c
font_01_sfnt_off000135d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x135D7 11408 bytes
SHA-256: 97843e16e91b060a73db0f5eb865cf94bc0a43fefa29854fce6cb927fe7892b6

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