Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d024e3aae863af2…

MALICIOUS

PDF

81.0 KB Created: 2021-04-01 00:24:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 37097b9bbbfef4bd86c173095e199ee9 SHA-1: 7fe942084f3f3466e073f438cb04c7c057f8e99a SHA-256: 0d024e3aae863af2fb23d27f4ccfe4b02c015e04b2edc86bc5befff195367e06
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged by multiple heuristics and an ML classifier as malicious, with ClamAV identifying it as 'Pdf.Phishing.Trojan'. It contains a large number of external links, many pointing to disposable hosting services, suggesting a link farm or SEO manipulation tactic. While no scripts were extracted, the presence of numerous external links and the overall structure indicate a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9967

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://nakupibizotan.weebly.com/uploads/1/3/4/7/134730769/buwajemakowubizubib.pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4475391/normal_6032362c8879e.pdfIn PDF document text
    • http://vatidenow.medianewsonline.com/how_do_you_keep_squirrels_away_from_your_bird_feeder.pdfIn PDF document text
    • https://rusunesezov.weebly.com/uploads/1/3/4/3/134309606/wubovokomotemu-kipopalu.pdfIn PDF document text
    • http://xefopuro.mypressonline.com/96322986906.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485149/normal_6019075a750f6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422622/normal_5fcb733db901a.pdfIn PDF document text
    • http://liwojabegeje.iblogger.org/55498063903.pdfIn PDF document text
    • https://nupowanekajotut.weebly.com/uploads/1/3/0/8/130815303/6215561.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371025/normal_60110c50a9baf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417033/normal_5feb921e98f7a.pdfIn PDF document text
    • https://rixuxakixolewe.weebly.com/uploads/1/3/1/3/131380342/basenananur.pdfIn PDF document text
    • https://mefiwoteta.weebly.com/uploads/1/3/5/9/135956645/5786733.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://feedproxy.google.com/~r/wb/ENAH/~3/bVCGPfG74RQ/wb?keyword=padi%20advanced%20open%20water%20diver%20max%20depthPDF link annotation
    • https://d4f4546a-a836-4b3d-8651-c56b89608eca.filesusr.com/ugd/3e9e83_61dc942a83db424f933ff63e64f15d94.pdf?index=trueIn PDF document text
    • https://ecab545c-19d2-4654-b6ac-fb8b9749f5ba.filesusr.com/ugd/e5412a_aa81c5c6bb0d48f6a190cb9cce6c129c.pdf?index=trueIn PDF document text
    • http://zepurudevivo.rf.gd/zambian_articles_of_association.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/edf642a6-6b30-4cf6-9375-f84165e60c3f/how_many_calories_in_a_cinnamon_roll.pdfIn PDF document text
    • http://guvenaverelud.epizy.com/98232305396.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bfb653b8-3bca-4d87-a15e-81165e0fc9a5/photoshop_tutorials_for_beginners_videos_free_download.pdfIn PDF document text
    • http://livirava.atwebpages.com/perazujakevexerixedokosat.pdfIn PDF document text
    • http://punafifa.rf.gd/piano_sheet_music_disney.pdfIn PDF document text
    • http://vemusimovoxodan.rf.gd/dupoxare.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/89a41c46-c4fc-48b9-89e7-8d2c9fe44c3c/86440077460.pdfIn PDF document text
    • https://95043331-d9de-4498-ad98-35b8ac3ee23f.filesusr.com/ugd/5740b2_6fea5a97c3e64e648455da9eaa35d3fc.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/e1f5d6b5-8e50-4a8a-ad3f-d4fc0ab963af/jafatafunuwolotuligawuk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c0768dcb-bfe4-499c-b940-f59f98cc81b2/kimupotufawupezemixowopex.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_off0000fe13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE13 5324 bytes
SHA-256: 7bac8b5c35175c19ba247be975f82c1d774adf4b4d4cee4141ff2d2ce56e6924
font_01_sfnt_off0001101d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1101D 11264 bytes
SHA-256: 936f92c1e0ac891c829495b64c1db0c930dd39d70d45db22a9076afe9b6e2847

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