Malicious PDF — malware analysis report

Static analysis result for SHA-256 06d6c0f0be60604d…

MALICIOUS

PDF

70.8 KB Created: 2021-03-27 14:44:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 4cb9cf3ca4fd0cbfbd3f05f84aaf2d2b SHA-1: d380e2a42c64e6226d328ec66788b9bc2fff1268 SHA-256: 06d6c0f0be60604d065cda79a5f6936c22224a1e70340a5342bd290b14ab9917
126 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains numerous embedded URLs, with at least one pointing to a domain associated with phishing or malware distribution. The presence of PDF-specific heuristics like 'PDF_SEO_DISPOSABLE_LINK_FARM' further supports the malicious nature of the document, suggesting it's part of a larger scheme to redirect users to harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://bologen.ru/award?keyword=nom+aditivos+alimentarios+pdf PDF link annotation
    • http://shtangye.xyz/islands_for_sale_cheap_2019p1w5t.pdfIn PDF document text
    • http://serviceforyou.site/263342482558lh32.pdfIn PDF document text
    • http://zixivudu.getenjoyment.net/jamopabumixeb.pdfIn PDF document text
    • http://you-bestshop.xyz/method_of_undetermined_coefficientspwa9p.pdfIn PDF document text
    • http://mynasert.online/why_my_lg_washing_machine_wont_drain4pnfu.pdfIn PDF document text
    • http://shoop-fl.ru/449161755192p81z.pdfIn PDF document text
    • http://localdesign.me/159340617398gwyh.pdfIn PDF document text
    • http://tewatag.medianewsonline.com/zupunovakewekud.pdfIn PDF document text
    • http://shoop-fg.ru/first_aid_booklet_ontariofbzg4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://2ed821ec-8078-4e74-b11b-c5cec6a88262.filesusr.com/ugd/65e777_acc15d9ec31949f7a72bb9c970b5dd60.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/bezegoluzose/chordata_and_non_chordata.pdfIn PDF document text
    • https://87b84290-c0b3-4c73-97a1-3d59c64c3f69.filesusr.com/ugd/c638b7_5bdb809408d74acdac5a18c5579ca24b.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/jijumupade/xapiv.pdfIn PDF document text
    • https://97783159-ced7-426e-9fbd-60d2bb3342fb.filesusr.com/ugd/00058f_b04929dc518c408dbf1b1e19c3a4b0c8.pdf?index=trueIn PDF document text
    • https://ddb281da-11d2-423e-b83a-408ecf1f607f.filesusr.com/ugd/9db61c_72d44ff380ae4a8fb3578f18f725ecb0.pdf?index=trueIn 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 2

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d761.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD761 5216 bytes
SHA-256: b61b2c55128137fe6a16823042d41940b26b26d8515d7bb650123213d9403c64
font_01_sfnt_off0000e913.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE913 11352 bytes
SHA-256: 5b1e072de6265364c0ef3dfbdc8b8cdbf2cf051a435c4b29b33b10e2e856560a

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