Malicious PDF — malware analysis report

Static analysis result for SHA-256 aba117200b869a3c…

MALICIOUS

PDF

85.2 KB Created: 2021-03-18 15:32:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 08238a2566c33fcb4d72110c056925cd SHA-1: ea596613cf02833b9574c9e225ceef8de0cffee1 SHA-256: aba117200b869a3cd584c522b6d425e50233de5b75a45dbd94dc0b105b4ea862
126 Risk Score

Malware Insights

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

The PDF document was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing or trojan. It contains a large number of embedded URLs, many pointing to disposable domains, indicating a link farm designed to redirect users to potentially harmful sites. The presence of embedded URLs and the nature of the heuristics suggest an attempt to deliver a malicious payload or phish for credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://druttle.ru/wix?keyword=elf+owl+adaptations+desert PDF link annotation
    • http://pedagodogiko.getenjoyment.net/qualitative_and_quantitative_research_sampling_strategies.pdfIn PDF document text
    • https://xuvasilibozin.weebly.com/uploads/1/3/5/3/135335949/jedetirodotakavopabi.pdfIn PDF document text
    • http://newipufisatag.scienceontheweb.net/38799229585.pdfIn PDF document text
    • https://cdn.sqhk.co/tiwavewo/ceD9Hgd/broken_promises_movie_free.pdfIn PDF document text
    • https://cdn.sqhk.co/josipinu/eib0gc2/nawefoluko.pdfIn PDF document text
    • https://cdn.sqhk.co/tewokozogop/gggjgg9/graphic_designer_job_description_examples.pdfIn PDF document text
    • http://kofodotig.sportsontheweb.net/43886692985.pdfIn PDF document text
    • https://bibawegosisuzu.weebly.com/uploads/1/3/5/9/135961680/jafajakafek.pdfIn PDF document text
    • http://javaxirivibewi.mygamesonline.org/59391409688.pdfIn PDF document text
    • http://wugupomovupa.sportsontheweb.net/90391752221.pdfIn PDF document text
    • http://zugasanuko.getenjoyment.net/kutiwanerusorunumasirim.pdfIn PDF document text
    • http://sevagawos.getenjoyment.net/excel_2016_customize_keyboard_shortcuts_missing.pdfIn PDF document text
    • http://bagawixaj.mywebcommunity.org/lejuxovaporalalasero.pdfIn PDF document text
    • http://netolenogafa.getenjoyment.net/wu_tang_clan_songs_ranked.pdfIn PDF document text
    • http://mereritijazos.scienceontheweb.net/gexaxozosusebusogox.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
    • https://s3.amazonaws.com/xilasisefi/poxeg.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8439bf0c-9fdb-438b-ac8c-44e7b7ac9a27/how_to_change_stride_length_on_elliptical.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9d2ba461-c111-4928-abb8-8bb8166f041a/nalilexuz.pdfIn PDF document text
    • https://s3.amazonaws.com/poguvelefa/totuz.pdfIn PDF document text
    • https://s3.amazonaws.com/tibanepoxilibud/2019_yearly_calendar_template.pdfIn PDF document text
    • https://s3.amazonaws.com/paxivogedewilu/vidmate_apk_mod_rexdl.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_off000104a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104A5 4872 bytes
SHA-256: 13cba389f593b8b80e6f0565ae350046f436e4a6632b3175b1b219378b44ce2b
font_01_sfnt_off00011554.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11554 10544 bytes
SHA-256: e4ee34503ffa2651e211b08a7f4d403e27684f87d8bc0ed36698f67499190a7e
font_02_sfnt_off00013968.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13968 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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