Malicious PDF — malware analysis report

Static analysis result for SHA-256 80f0762b36151ecb…

MALICIOUS

PDF

69.8 KB Created: 2021-02-22 11:10:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 220627cf80fe943796804824105af3d0 SHA-1: 0da81b48251f7ac686989852d1e9b7d5e1dc0efa SHA-256: 80f0762b36151ecbcb9c3178b616ed5dcc7af4e003e65c705e6dcd4830c9f04e
156 Risk Score

Malware Insights

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

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 0.9998

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://crophysi.ru/strik?utm_term=nikon+d800+dx+lens+compatibility PDF link annotation
    • https://titobabedax.weebly.com/uploads/1/3/4/3/134317276/xetigo_tigigaxana.pdfIn PDF document text
    • http://winnerslm.space/vutivixazjyk2q.pdfIn PDF document text
    • http://esclub.pro/chemistry_investigatory_project_on_adulteration_in_foodstuffsx3o9m.pdfIn PDF document text
    • http://xatubaxo.iblogger.org/warm_bodies_full_movie_in_hindi_dubbed_free_download_hd.pdfIn PDF document text
    • http://fbcopyright-center.com/regalowomuvofibelieifs9.pdfIn PDF document text
    • https://nebofubegifeso.weebly.com/uploads/1/3/1/4/131437549/dawumela.pdfIn PDF document text
    • https://xevibobi.weebly.com/uploads/1/3/4/6/134683071/3151362f.pdfIn PDF document text
    • http://natorg.space/vevelaxevamuleketiwib79xfq.pdfIn PDF document text
    • https://melezejezoman.weebly.com/uploads/1/3/5/3/135383670/renuzobokukuxezip.pdfIn PDF document text
    • http://thecabinets.xyz/fidavexune82d1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/zuwosil/first_law_of_thermodynamics_lab_report_politeknik.pdfIn PDF document text
    • https://s3.amazonaws.com/xipavir/caller_id_android_app.pdfIn PDF document text
    • https://s3.amazonaws.com/jobavo/minecraft_account_hacker_no_survey.pdfIn PDF document text
    • http://xikufozumif.epizy.com/7_days_detox_meal_plan.pdfIn PDF document text
    • https://s3.amazonaws.com/loranoduzuja/lusasetib.pdfIn PDF document text
    • https://s3.amazonaws.com/wemupajese/casio_scientific_calculator_for_windows.pdfIn PDF document text
    • http://bewegemoketofa.rf.gd/67927934470.pdfIn PDF document text
    • https://s3.amazonaws.com/puretulenuza/definition_of_alternative_dispute_resolution.pdfIn PDF document text
    • https://s3.amazonaws.com/mawesenasijoser/pafaxuxotujilumuxun.pdfIn PDF document text
    • https://s3.amazonaws.com/lanorolowu/jizeri.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_off0000d217.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD217 5800 bytes
SHA-256: dbc1cfe77f06f4bd0f46317bc926f9c73cb32659db80a1b18e961b6121ed3e32
font_01_sfnt_off0000e5d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5D4 10640 bytes
SHA-256: c9428d68a4425d90060c8215573dfe08268994ff5f514be021ebd1dc65f5f1ff

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