Malicious PDF — malware analysis report

Static analysis result for SHA-256 58f274ae174e93df…

MALICIOUS

PDF

89.7 KB Created: 2021-03-21 09:22:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: cdf1cec2d3ccb3d3e853198f659cb80f SHA-1: 7ef181135b86870e3d09732f10eb3bfebad331ec SHA-256: 58f274ae174e93dfe63803b519803b6ff67d71d89824017a5fa92197f6ade42f
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified as a 'PDF_SEO_LINK_FARM' heuristic. Many of these links point to other PDFs hosted on various platforms, suggesting an attempt to manipulate search engine results or distribute further malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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 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://fokemale.ru/award?keyword=actinides+properties+pdf PDF link annotation
    • https://tuvepovuno.weebly.com/uploads/1/3/3/9/133997374/c6fb13ba5.pdfIn PDF document text
    • https://cdn.sqhk.co/dabozijide/dhaPiH5/hop_ball_3d_crazy_games.pdfIn PDF document text
    • https://cdn.sqhk.co/relaberof/iahgpi1/9168900420.pdfIn PDF document text
    • http://xisumagogali.getenjoyment.net/wumafanulusamuxe.pdfIn PDF document text
    • https://fafuluzugow.weebly.com/uploads/1/3/1/4/131453648/tiriwitax-sofokajezoke.pdfIn PDF document text
    • https://mubelumovetofap.weebly.com/uploads/1/3/1/8/131856402/0c59fb3524.pdfIn PDF document text
    • https://cdn.sqhk.co/zigotimuti/jYfvyFN/top_10_disco_hits_of_the_70s.pdfIn PDF document text
    • https://minadefimufev.weebly.com/uploads/1/3/4/6/134635785/7709078.pdfIn PDF document text
    • http://setafugeridol.scienceontheweb.net/nefipilelaxawisibomu.pdfIn PDF document text
    • https://cdn.sqhk.co/lasijutag/cVjjOGv/personalised_iron_bottle_opener_uk.pdfIn PDF document text
    • https://cdn.sqhk.co/pajokiman/cGjj4Up/38627612090.pdfIn PDF document text
    • https://jotafatebukuzeb.weebly.com/uploads/1/3/0/7/130776674/7516029.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/dozore/the_odyssey_graphic_novel.pdfIn PDF document text
    • https://s3.amazonaws.com/risisipajole/similes_worksheet_for_grade_4_with_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9f5737e8-311e-41b1-a177-aca5a3b403d3/fudesasofimonijefa.pdfIn PDF document text
    • https://s3.amazonaws.com/gozilum/42603857853.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f87370ec-6222-42f6-a8e5-e64dcd687684/speed_queen_dryers_cost.pdfIn PDF document text
    • https://s3.amazonaws.com/lolijexejomak/vijibolakuju.pdfIn PDF document text
    • https://s3.amazonaws.com/tevigotu/amrit_maan_trending_nakhra_song_mp4.pdfIn PDF document text
    • https://s3.amazonaws.com/wopari/76747684329.pdfIn PDF document text
    • https://s3.amazonaws.com/rakabexozu/aadhar_card_application_form_online_apply.pdfIn PDF document text
    • https://s3.amazonaws.com/zufojadibi/vopopigigixutezoguwa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3fa9be1b-7242-4440-b9d9-f771f96cf78a/i_was_quiet_but_not_blind_meaning.pdfIn PDF document text
    • https://s3.amazonaws.com/penefelomiju/bavowilanadefepeg.pdfIn PDF document text
    • http://gevejonitu.onlinewebshop.net/face_reading_books_free_download.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_off00012195.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12195 4896 bytes
SHA-256: 1a897970e55ce799dc8c38f6832497606c2b6d78346b3155c6d19de755b29e99
font_01_sfnt_off00013252.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13252 11596 bytes
SHA-256: 122652807731dbd25e77198223e9dfd385b65ba23f6fe368f86a0a53402a6107

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