Malicious PDF — malware analysis report

Static analysis result for SHA-256 3edfcc459998c29f…

MALICIOUS

PDF

71.7 KB Created: 2021-04-03 20:40:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: e43b0b036cb4f40afc63d2efd39d91cf SHA-1: aa4c42c0a64419f8125c5e5c128eac2dc7a884f2 SHA-256: 3edfcc459998c29fae3a0d7efc1bc74270b08b2f7d802e9931c063c9bdba3787
136 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains a heuristic firing indicating an external URI and an image lure linking to an SEO redirector, suggesting a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate maliciousness. The embedded URL points to a suspicious domain, likely serving as a lure for a phishing campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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/wix?keyword=give+me+a+ticket+for+an+airplane+guitar+chords PDF link annotation
    • http://kejoxemubogese.mywebcommunity.org/maytag_model_mvwx655dw1_problems.pdfIn PDF document text
    • http://xizapataruxeku.mygamesonline.org/zoxibejeneze.pdfIn PDF document text
    • http://lorozetuwivu.medianewsonline.com/what_is_an_acknowledgement_of_paternity.pdfIn PDF document text
    • http://rusefogotomik.iblogger.org/moonlight_sonata_sheet_music_free_piano_printable.pdfIn PDF document text
    • http://jivavesomuviz.getenjoyment.net/kozufe.pdfIn PDF document text
    • http://durugara.iblogger.org/48553814843.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/wizitifowubux/sperry_multimeter_dm-350a_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/vibuvomomuv/minority_scholarship_form_2018.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/de0519aa-d5d5-47ce-b718-e5f354794953/43818285538.pdfIn PDF document text
    • http://lovifepomuxi.rf.gd/industrial_psychology_filetype.pdfIn PDF document text
    • https://s3.amazonaws.com/fosawef/capablanca_my_chess_career.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d7dfda19-3733-48c7-b75c-958e86c647db/93184247859.pdfIn PDF document text
    • http://kogorokexo.rf.gd/aulas_de_ingles_gratis.pdfIn PDF document text
    • https://s3.amazonaws.com/jozaponi/kumifufibudonezamolawoto.pdfIn PDF document text
    • https://s3.amazonaws.com/figidireki/information_seeking_behaviour.pdfIn PDF document text
    • https://s3.amazonaws.com/vovuzize/fanos.pdfIn PDF document text
    • https://s3.amazonaws.com/benubapopikaj/agario_private_server_mod_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/46167eb3-a237-4b4a-b56b-519752fae26e/what_is_a_economic_boom_example.pdfIn PDF document text
    • https://s3.amazonaws.com/pukiza/85081797751.pdfIn PDF document text
    • https://s3.amazonaws.com/xilasisefi/minofinojituviguboku.pdfIn PDF document text
    • http://fugufaza.myartsonline.com/watson_glaser_critical_thinking_skills_test.pdfIn PDF document text
    • https://s3.amazonaws.com/serogajugomiji/autocad_2015_with_crack.pdfIn PDF document text
    • https://s3.amazonaws.com/gagotaniwipure/beseler_23c_iii_manual.pdfIn PDF document text
    • http://jasobetesoze.epizy.com/tifonetegesowazakibu.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_off0000d7da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7DA 5724 bytes
SHA-256: 8b45d88205e9f07a2096d0c6e61262873a234d018ac96ad1c59052b2b9623492
font_01_sfnt_off0000eb32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB32 10476 bytes
SHA-256: 15dedebe41f368e2f0e53d34afcddf0363cdbd509369b40f4b2b4fe436cbd398

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