Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d5c67ee8210c148…

MALICIOUS

PDF

84.4 KB Created: 2021-04-12 16:11:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 10feb8898ef5a6cceddb9d8c3589de1d SHA-1: 21f65efd4fc566822d39465871095ab01cca133b SHA-256: 6d5c67ee8210c148188fa4dd3c181e2977e8f689a783584b1281977edd281b62
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 0.9970

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://xajibur.ru/strik?utm_term=hp+officejet+7510+ink+cartridge+change PDF link annotation
    • http://palitra-cveta.ru/92565361144uteoe.pdfIn PDF document text
    • http://securespot.ru/3041510944267kdq.pdfIn PDF document text
    • http://pevokepavaxe.iblogger.org/43528118827.pdfIn PDF document text
    • http://termo-nord.tech/xifotevewodopimugeurugu.pdfIn PDF document text
    • https://cdn.sqhk.co/lafuwexale/haQgjeT/soft_claws_cat_toys.pdfIn PDF document text
    • https://cdn.sqhk.co/joremeve/bXJmYqH/recharge_pcs_gift_card.pdfIn PDF document text
    • http://hellochildren.online/mr_coffee_5_cup_programmable_coffee_maker_walmartuuyjf.pdfIn PDF document text
    • https://cdn.sqhk.co/jeporikate/gE8Myhc/jezolavuw.pdfIn PDF document text
    • http://gebuhrenfrei-mein.com/raksha_bandhan_kannada_video_songsna6ym.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/2136a926-5bae-4c33-aa48-f6fdd4ea90db/84451565134.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bc3cf465-cca4-4427-89da-eae02b2846d4/vuxebexub.pdfIn PDF document text
    • https://s3.amazonaws.com/piradi/wijirilewomi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1168d979-6ef7-4b9a-bd11-95afa7ade67d/long_john_silver_coupons_december_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/pajukovuxetu/cuisinart_fondue_set_instructions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/267b9ffb-db96-4d9b-8459-b2b805251bfa/579605942.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c3cd43e7-3400-4803-bada-a8c18cf7b14c/epson_wf_2540_inkjet_or_laser.pdfIn PDF document text
    • https://s3.amazonaws.com/tanapilamaxi/fipugu.pdfIn PDF document text
    • http://lopesexam.epizy.com/arithmetic_mean.pdfIn PDF document text
    • https://03df18d0-0a94-4077-8b44-1f3cf8b7c870.filesusr.com/ugd/23a6c3_10c98f23e9ae47859362af7444ac8d5c.pdf?index=trueIn PDF document text
    • https://e0271a52-a7af-48e9-8a99-924ce320ec62.filesusr.com/ugd/be5703_2f99402e105740f288ce416bc055f343.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/wozoxub/classic_warlock_guide.pdfIn PDF document text
    • https://3c59ccad-08dd-474b-8af0-a42d91f20399.filesusr.com/ugd/489ff0_dafb06d8506a4a80ba9a553df9045534.pdf?index=trueIn PDF document text
    • http://losopokatefoxot.rf.gd/45297252543.pdfIn PDF document text
    • http://vewizoxevig.rf.gd/coast_guard_marching_song_sheet_music.pdfIn PDF document text
    • http://rutenodisekorin.rf.gd/8d_problem_solving_form.pdfIn PDF document text
    • https://s3.amazonaws.com/zebarufuridorur/guardian_good_university_guide_architecture.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_off00010a34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A34 5708 bytes
SHA-256: eaf9a1f902a042a425ad47c2b5023db1ac41507ac85f62f0550926815734300d
font_01_sfnt_off00011dbc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11DBC 11248 bytes
SHA-256: 8f75e66e11e9f7e4de143031e9a498aaf2366596f4ccac8ff9da6abe66733ac3

Open this report in the interactive analyzer, or submit your own file for analysis.