Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e3abed467b4a219…

MALICIOUS

PDF

83.2 KB Created: 2021-03-05 13:04:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 70931d544199368d7d7f26030b701335 SHA-1: 0f55c9d880c6c8a489f64129140821f413823f0d SHA-256: 9e3abed467b4a2194432706c0d4959bff1583895198a9c4bfad384768132ebd9
196 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which are SEO-optimized titles, suggesting a link farm designed to attract traffic and potentially host malicious content. The 'SE_PASSWORD_ARCHIVE_LURE' heuristic indicates that the document likely instructs the user to open a password-protected archive, a common tactic to bypass security scanners. ClamAV detection as 'Pdf.Phishing.Trojan' further supports the malicious nature of this file.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 6

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://botokaw.ru/award?keyword=indian+love+stories+pdf+free+download PDF link annotation
    • http://kenugizi.getenjoyment.net/89846503735.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381738/normal_6033b643b9def.pdfIn PDF document text
    • http://allerop.xyz/samsung_refrigerator_rf263beaesr_defrost86sh1.pdfIn PDF document text
    • http://zodimasar.mypressonline.com/hotsy_pressure_washer_parts_breakdown.pdfIn PDF document text
    • http://walkover.me/the_complete_book_of_demonolatry8manx.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402000/normal_6021296c1204f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387704/normal_602f8552e4b58.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392472/normal_5fed7822ac502.pdfIn PDF document text
    • http://xawamiwupajev.mygamesonline.org/9369283934.pdfIn PDF document text
    • http://petrol-v-pol-price.site/how_to_check_the_formula_in_excelavxnx.pdfIn PDF document text
    • http://tokexal.medianewsonline.com/tujarojifak.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368495/normal_5fc851521ba74.pdfIn PDF document text
    • http://copyrighthelpptteam.com/conflict_management_meaning_business8lgsq.pdfIn PDF document text
    • http://sellforce.ru/94977710544961ty.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/womirofop/blaze_tv_tuner_software.pdfIn PDF document text
    • https://s3.amazonaws.com/gapivegek/soldier_13_performance_review.pdfIn PDF document text
    • https://s3.amazonaws.com/tanikanaw/bise_sargodha_1st_year_date_sheet_2018.pdfIn PDF document text
    • https://d25e5d79-f3dc-43ab-8538-58f2f4730235.filesusr.com/ugd/898300_dc59f6a329e7473c9e6eb358aad599fd.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/genedonapubefe/47671214340.pdfIn PDF document text
    • https://s3.amazonaws.com/nademopor/59074675268.pdfIn PDF document text
    • https://s3.amazonaws.com/babetafaperaxov/project_plan_template_excel_2010_free.pdfIn PDF document text
    • https://b3a1a1c9-4f8f-4fb8-b7cc-7339030cc889.filesusr.com/ugd/162fe6_44cdeb38f4274b08ac374a2dba92cdc5.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/dinilederu/buku_tafsir_mimpi_bergambar_lengkap.pdfIn PDF document text
    • https://s3.amazonaws.com/xakapudakadu/5380101559.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_off000109d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109D9 5124 bytes
SHA-256: ae5abcafb9c628fa4de23930a479c0d28936e0936c14564e130d4cefa1240287
font_01_sfnt_off00011b6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B6B 10500 bytes
SHA-256: 647629bc4e754850d85cdf8d4d0766090c08858d9d1c34374f74d7f9c7f810d1

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