Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d0198e53462876d…

MALICIOUS

PDF

45.4 KB Created: 2020-10-28 15:47:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: e1287018bfc9541d87382151de247592 SHA-1: 2c6345be25d3868900191c6afcb3fb58799c960e SHA-256: 0d0198e53462876d754b243e0aac8405f388e8aa887d171c6b213575792c1a76
154 Risk Score
Tags
free-cdn-ebook-manual-lure

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 1.0000

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://cctraff.ru/strik?keyword=when+the+company+assigns+factory+labor+costs+to+jobs In PDF document text
    • https://xopaluwejur.weebly.com/uploads/1/3/1/8/131857284/babfa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0484/9929/4363/files/bebewupesukovuza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/4324/8030/files/is250_manual_swap.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2235e55d-14f2-422c-923b-04fda46f0560/paniviguxavekamon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/0615/4692/files/73251444369.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/7655/0308/files/ap_biology_042_biological_molecules_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/fevelugosaserikokowafiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5054/0964/files/singer_brilliance_6199_user_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7047/9772/files/12003825453.pdfIn PDF document text
    • https://s3.amazonaws.com/migivewuwe/95483089273.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files/current_asset_management.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/8833/7824/files/dekizasa.pdfIn PDF document text
    • https://s3.amazonaws.com/lewuli/simple_and_compound_sentences_worksheet_3rd_grade.pdfIn PDF document text
    • https://s3.amazonaws.com/turip/41071474206.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/3272/2599/files/ghostscript_to_jpg_resize.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/270a8428-f3fb-4906-9c88-5b8ba70f5730/4640684357.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/76a063d5-cb1e-4d10-8f8d-644f74560e83/29546609739.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/20837486323.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/1688/6678/files/plutarch_julius_caesar.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

Related samples 4

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000641c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x641C 5548 bytes
SHA-256: bba990205637d9c9811ffc5faf5b7b34cb98ea618a91d6df2e5859f521bd0e59
font_01_sfnt_off000076d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76D5 10280 bytes
SHA-256: a0f79b701e04e3de115dfe6bd9b6fe03b2426a3693f6e027ef2dd8423af4245e
font_02_sfnt_off00009a09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A09 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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