Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0c79eab27da83d3…

MALICIOUS

PDF

77.2 KB Created: 2021-03-21 09:59:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 463a90801a738cbbd4fb3d0e6e6afb80 SHA-1: 4314cbb58519b584f299d727d79d6239739eb271 SHA-256: e0c79eab27da83d35b96b43e33b747ce4b824160a7f6109c1336d722da06464e
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The heuristic firings reveal a PDF containing a large number of external links, suggesting a link farm or phishing attempt. While no scripts were explicitly extracted, the presence of numerous external URLs points towards an attempt to redirect users to potentially harmful sites, possibly for malware distribution or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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 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.
  • 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://botokaw.ru/wix?keyword=splitfire+spark+plugs+australia PDF link annotation
    • https://pojikajuruwasi.weebly.com/uploads/1/3/2/6/132695468/13aeaebd8e9b9be.pdfIn PDF document text
    • https://fiwirozubaxezu.weebly.com/uploads/1/3/4/6/134659856/dafesiwalipovat.pdfIn PDF document text
    • http://pirewarekow.mywebcommunity.org/lasawijosezidenuz.pdfIn PDF document text
    • https://forupiwiwipugo.weebly.com/uploads/1/3/5/3/135349306/f79970cc6d81.pdfIn PDF document text
    • http://reduslimitaly-official.site/is_there_a_sandman_movies9t6e.pdfIn PDF document text
    • https://dasujodiket.weebly.com/uploads/1/3/4/4/134481559/sujadixixa_rebuzetibitapu_muxokavat_gibakemaf.pdfIn PDF document text
    • http://xepewifub.mygamesonline.org/xedafililinimasiw.pdfIn PDF document text
    • http://usene.xyz/toshiba_satellite_laptop_error_codesu2ktn.pdfIn PDF document text
    • http://mumopajikex.mygamesonline.org/fundamentals_of_heat_and_mass_transfer_bergman_7th_edition.pdfIn PDF document text
    • https://womazineput.weebly.com/uploads/1/3/4/8/134895737/7dec181b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://sifebitufol.onlinewebshop.net/36201620641.pdfIn PDF document text
    • https://s3.amazonaws.com/liguwubore/algebra_2_textbook_answers_key.pdfIn PDF document text
    • https://27420876-d215-4860-9a72-f48db0d0c320.filesusr.com/ugd/4062c2_28a919bd91ac4d16b94850716282096b.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/vifusupegiza/90213783897.pdfIn PDF document text
    • https://s3.amazonaws.com/lewuli/70046012692.pdfIn PDF document text
    • http://zepuwiz.atwebpages.com/sharepoint_designer_2013_tutorial_for_beginners.pdfIn PDF document text
    • https://02314edc-d025-420b-9d62-795437f25c47.filesusr.com/ugd/4f0fc1_ea95aa4ab9ab4b12a8a6bf9ca6697bbf.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wekibik/19513033050.pdfIn PDF document text
    • http://pudolajuji.atwebpages.com/37578173577.pdfIn PDF document text
    • https://d4a58959-25bc-41ae-a48c-99f47e3c4711.filesusr.com/ugd/4dab1e_143b1b60d3fd49d0b0a059e44874323b.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_off0000f0ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0FF 5236 bytes
SHA-256: 474699cab9e5e298f242a6db4cdcda553424c8e9a9e6b549ca19aa6e00574854
font_01_sfnt_off000102e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102E0 10824 bytes
SHA-256: 5569adb0d4c590e5b7266665225ef921779a5f251abe95910bcadd08e8d064d1

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