Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6403097d3d27d04…

MALICIOUS

PDF

79.6 KB Created: 2021-03-24 10:42:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: c72dc7b5e64fef4a91d926fa23fa069e SHA-1: 84f071309499976f5654649409614815cfddc8f0 SHA-256: d6403097d3d27d04f197755c63be56c6d1d8b30ac555318bbcf9d95aafad3f9c
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 0.9990

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://druttle.ru/award?keyword=borophene+synthesis+pdf PDF link annotation
    • https://cdn.sqhk.co/mazonixun/m7ghij3/26191374159.pdfIn PDF document text
    • http://fruitnaturs.space/581679078003x1de.pdfIn PDF document text
    • https://cdn.sqhk.co/vedasukuki/exizsxi/brad_s_deals_columbia_shoes.pdfIn PDF document text
    • https://cdn.sqhk.co/pawekenu/Qij5hfF/sopepizinebuj.pdfIn PDF document text
    • http://copyrightsupportforlnstagram.com/mirarivikawenesekavoluradajd0g.pdfIn PDF document text
    • http://damvglaz2.xyz/black_ants_and_buddhist_chapter_2ddzm7.pdfIn PDF document text
    • http://daimontimur.org/9989150744r75ir.pdfIn PDF document text
    • http://keepxufi.space/liwogitoljhv5.pdfIn PDF document text
    • https://cdn.sqhk.co/manigonodapu/ijPhfhc/rise_of_skywalker_general_leia.pdfIn PDF document text
    • http://card2card.live/grade_1_reading_comprehension_freernili.pdfIn PDF document text
    • http://doordash.link/wopinotetavomubohzmv6.pdfIn PDF document text
    • http://photoforce.ru/nesukilimex5hss.pdfIn PDF document text
    • https://cdn.sqhk.co/sebetite/hajchhC/waxurufusilefu.pdfIn PDF document text
    • http://detonicufficiale.website/2d_barcode_generator417urdss.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/zuxime/109132736.pdfIn PDF document text
    • https://5ac9d038-517d-4536-97f6-676423289421.filesusr.com/ugd/b444d4_526229a3d2814ae997dc236caa04dd15.pdf?index=trueIn PDF document text
    • https://011f98f8-b45f-4578-a2fd-466b530f7845.filesusr.com/ugd/74e905_b2f3be4ce71b4550b273a9e492e36c3f.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/4b22b0c0-200e-494d-b937-54a5d834b0d7/vabesefu.pdfIn PDF document text
    • https://s3.amazonaws.com/dukexajuj/arjun_reddy_cheri_cheri_lady_video.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/75d9fff5-16f4-416c-a6e6-fcc169a02e34/graphs_of_trigonometric_functions_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/saziwijaxodav/zolodovobafuvejefox.pdfIn PDF document text
    • https://7162f0c1-3bb2-4775-9ad2-1e34613fb889.filesusr.com/ugd/595093_561cd202cbb84b51a647db914582741a.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/rezugekolaba/fly_fishing_report_arkansas_river_colorado.pdfIn PDF document text
    • https://6558ac43-984d-4e3a-97a1-dec8860611ed.filesusr.com/ugd/c73740_32ee2600a0ea41aab594a5b198a8a3cb.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/6494b9d9-9961-44de-8e0d-59b45a904009/holmes_air_purifier_customer_service_number.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_off0000f515.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF515 5036 bytes
SHA-256: c8c845fa3c549dc8ed5ddc41fe9bbc9655b30506b415174b8180f103c642a859
font_01_sfnt_off0001063e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1063E 12632 bytes
SHA-256: 1f7ee53de476c05a39bee08435d75b0df71c0f4d50a1f1752561523ed9bc9b4d

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