Malicious PDF — malware analysis report

Static analysis result for SHA-256 c10f02704e23e277…

MALICIOUS

PDF

59.2 KB Created: 2020-10-28 22:50:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 570ec1f6d7c1cda1d75061d25c1010e4 SHA-1: b483871a9e03ade8ed00cdb47d15b18d597a4a3a SHA-256: c10f02704e23e2778af0d8722a9b9e72d9de9d72b180a3b619044458745ad1b7
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://ggtraff.ru/strik?keyword=maisto+harley+davidson In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/9542/0831/files/spyro_shadow_legacy_trailer.pdfIn PDF document text
    • https://s3.amazonaws.com/jinabisura/68163773673.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0464/6027/2808/files/kitabarogimaj.pdfIn PDF document text
    • https://s3.amazonaws.com/vatakefojunib/bernard_marr_data_strategy.pdfIn PDF document text
    • https://s3.amazonaws.com/bulozor/black_magic_in_kannada.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files/zixenebi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/7040/0928/files/tavidiledogitip.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/52d5e899-c70d-4aed-a92a-70b9feb5eefe/minecraft_wiki_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/91c37d80-2660-49c5-aa17-bfacdffe259c/cuanto_cuesta_1_kwh_de_luz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/6308/1643/files/maiden_voyage_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1170c02b-5c72-4409-a369-5d5d7620c2f1/11997827824.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7152/7319/files/time_conversion_worksheet_kuta.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fc203ec3-ccdb-4441-a6ab-c6dfd082f487/87946128813.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5685/6230/files/16537180883.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/2638/5576/files/9300949493.pdfIn PDF document text
    • https://s3.amazonaws.com/lewuli/club_penguin_mission_11.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/6898/3969/files/billy_graham_nearing_home.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/3186/2679/files/milwaukee_2663-20_specs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/2653/5832/files/59279913752.pdfIn PDF document text
    • https://s3.amazonaws.com/sugosubexez/70429408846.pdfIn PDF document text
    • https://s3.amazonaws.com/levovod/tovomejumelako.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7877/9047/files/tefegavutov.pdfIn PDF document text
    • https://s3.amazonaws.com/dorobukasawituw/42847580836.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6035/3429/files/comprehension_worksheet_ks2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1514/2567/files/74800910654.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d7b814d-cdad-4129-a660-d4cdcbe4513f/2360649343.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/4594/0128/files/what_is_disposed_in_court_means.pdfIn PDF document text
    • https://s3.amazonaws.com/wegemebufojafak/52825879340.pdfIn PDF document text
    • https://s3.amazonaws.com/xarojapi/gawasoxusexup.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_off0000a7db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA7DB 5080 bytes
SHA-256: 4873088e72257f2c8d3420e4489b46d8d427011b41c7493ea3860f7f533d6548
font_01_sfnt_off0000b931.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB931 11376 bytes
SHA-256: ad3173f73bd0b969fbb9fcb4a4a667f44392c1aa6d765431823ce67d15d4a470