Malicious PDF — malware analysis report

Static analysis result for SHA-256 09cd5a6904574584…

MALICIOUS

PDF

89.3 KB Created: 2021-03-14 12:47:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: cadd4a6e07d737dc5a493d782704b057 SHA-1: d32a2abeb067d204511914ca4b88caa9ab0f5de7 SHA-256: 09cd5a690457458413df14c73e406d2a29a7018a643bb61dc7603b6b85b3fc27
186 Risk Score

Malware Insights

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

The PDF file contains numerous external links, forming a link farm on disposable hosting, which is a common tactic for distributing malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://mezovuduw.ru/strik?utm_term=how+to+play+blues+harmonica+key+of+a PDF link annotation
    • http://xemororiwabu.iblogger.org/70127934617.pdfIn PDF document text
    • http://vazawujuzu.sportsontheweb.net/xupodoxejufulepoli.pdfIn PDF document text
    • http://bamiluzigu.mygamesonline.org/what_is_informal_group_in_organisational_behaviour.pdfIn PDF document text
    • http://vevebopawo.mywebcommunity.org/fifty_shades_of_grey_synopsis_spoiler.pdfIn PDF document text
    • http://tizadejaso.getenjoyment.net/zoxovexe.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://sabozet.epizy.com/weburupimutugilid.pdfIn PDF document text
    • https://24a70dd4-b549-4b9e-9c0a-6eea45ab85ad.filesusr.com/ugd/ab0c63_824f24b6f2fc45c6ac394e4534db611a.pdf?index=trueIn PDF document text
    • https://74269c25-1731-4359-90d4-804f54ef9c1c.filesusr.com/ugd/b5973a_4b1b9c5ad1484426b69f9b20d6c4af4c.pdf?index=trueIn PDF document text
    • https://7a9095e9-4ba3-4ff7-9406-a75d0382ce8a.filesusr.com/ugd/db93e9_03dc9d4de0bd4425b26072730be7d5d0.pdf?index=trueIn PDF document text
    • https://7d6e376e-1ee3-4df5-88c1-8d1511d419f8.filesusr.com/ugd/7dd30d_11b73315db1248fda07c07a5350d7b12.pdf?index=trueIn PDF document text
    • https://9db8f275-5044-409a-aa1b-3306d9dda9bd.filesusr.com/ugd/361f4b_f44dae6070d74824a88a3d8b18e5a042.pdf?index=trueIn PDF document text
    • http://pukowevuvifa.rf.gd/48120764825.pdfIn PDF document text
    • https://b5c90759-dbf8-4ccd-b12d-e23c958527f9.filesusr.com/ugd/915a55_ec7723c5553343549b1aadcede81b4ca.pdf?index=trueIn PDF document text
    • http://munoxefarofow.rf.gd/pedivap.pdfIn PDF document text
    • https://6b5d12f1-3bbc-48af-9ddb-5430d2fe15e7.filesusr.com/ugd/3bf302_2a32a460627d4346a85bc23b04eb4e12.pdf?index=trueIn PDF document text
    • https://413f70bc-0247-4a04-a3fc-eabb14e2b93f.filesusr.com/ugd/f18ee6_5a5a49b622184cd5816ff87217e441fe.pdf?index=trueIn PDF document text
    • https://d03ec42c-8b93-48d3-a61e-9aee396c0db4.filesusr.com/ugd/1e557c_e7bffc7220294ebf8e003776f2d12336.pdf?index=trueIn PDF document text
    • http://dasiletu.epizy.com/lattepanda_alpha_864s_datasheet.pdfIn PDF document text
    • http://rizivubonulej.atwebpages.com/zufiwubonij.pdfIn PDF document text
    • https://235a1a37-2bc9-4d3b-8f1d-d3952ad9fba8.filesusr.com/ugd/3111f7_d2d8e20aa764485c8702e2be2aa81f52.pdf?index=trueIn PDF document text
    • http://xezibes.epizy.com/buck_stove_27000_glass_doors.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_off000110b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x110B9 5496 bytes
SHA-256: 0d28a7197d2b5e9fd1a06a1151468366b42b58e6df8fcd6512f44b748f395322
font_01_sfnt_off0001234e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1234E 11260 bytes
SHA-256: c83f493d74af2cbbf0a975dfbd0bea81747d14c4f0b650a3cc43c1a28ffe027f
font_02_sfnt_off000149d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x149D6 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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