Malicious PDF — malware analysis report

Static analysis result for SHA-256 e17269dc8dcc6777…

MALICIOUS

PDF

79.0 KB Created: 2021-03-25 10:09:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: ede0cef88c624a79223ad098b01ad046 SHA-1: da1f5d4f20c020e0db5f905ad4185269fc99f447 SHA-256: e17269dc8dcc6777a5df35c6259f6dd772a8fced738ccfcbdcdcfee1d9b0d40f
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

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 0.9997

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://xezojetit.ru/123?utm_term=states+of+water+information PDF link annotation
    • http://blockhcain.host/iowa_duck_hunting_laws8lt35.pdfIn PDF document text
    • http://rekabiw.22web.org/ableton_9._5_crack.pdfIn PDF document text
    • http://dupesagefad.22web.org/iron_carbon_phase_diagram_explanation.pdfIn PDF document text
    • http://damvglaz6.xyz/vazoviwerudarowipuzemajip6p5z.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366357/normal_603f8ea1dbcb1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409254/normal_5fc7abcc4aaa8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411250/normal_603c661deae26.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407100/normal_6006797da63fa.pdfIn PDF document text
    • http://xapoxenu.iblogger.org/how_to_get_rid_of_old_acne_scars_home_remedies.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449781/normal_5fc86d61dee03.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gifetezese.rf.gd/8583193285.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ec533d25-4f57-4307-998d-89653dcf6f56/pdf_harry_potter_spells.pdfIn PDF document text
    • http://baropimogojel.epizy.com/68926008832.pdfIn PDF document text
    • http://gizegojaza.rf.gd/solid_design_principles_c.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0c7fdc35-7bd3-4a36-87ae-f7ff7b951733/vawavusakegulot.pdfIn PDF document text
    • http://fibotujipisozu.rf.gd/kajomanaverevov.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/233db345-1cad-4921-bf96-81c85576761d/how_to_connect_samsung_scx-3405w_printer_to_wifi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0d9338a2-10ae-4edf-abfe-5c7857c515d9/summer_infant_baby_monitor_losing_signal.pdfIn PDF document text
    • http://rarixigowof.epizy.com/love_actually_soundtrack_sheet_music.pdfIn PDF document text
    • http://wetepizibora.rf.gd/nerorejat.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d536a09-583b-40ec-8488-c6e486452e48/pharmacology_practical_book_for_mbbs.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_off0000f908.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF908 5076 bytes
SHA-256: afe8c612423e1937c6c118bb859a886a8acfd0396ec5d91d5d448553aae59c49
font_01_sfnt_off00010a45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A45 10684 bytes
SHA-256: 4ce7b9834c351aaed82360270a3977ff4723900bd3196804a70206a9d537ddd4

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