Malicious PDF — malware analysis report

Static analysis result for SHA-256 eca2cff22641e8fc…

MALICIOUS

PDF

88.6 KB Created: 2021-04-18 03:00:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 889472c46255855c41cd6fef64c83641 SHA-1: 8ac6705c6a6f6ef320824d9e93d64fe3542f568e SHA-256: eca2cff22641e8fc6e7c2f418ec14ff786ed77daee93a2313210a45d0fc783f4
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

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 0.9967

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 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.
  • 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/strik?utm_term=what+skin+tone+is+mexican PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4489237/normal_60369c1ba26da.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368477/normal_6047eb249aceb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418180/normal_5fccf0ab427ff.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480755/normal_600bfdf6c89f9.pdfIn PDF document text
    • http://xasowokudat.medianewsonline.com/fefuv.pdfIn PDF document text
    • http://bigchance.pw/2501971106ermwo.pdfIn PDF document text
    • http://xizapataruxeku.mygamesonline.org/98269186463.pdfIn PDF document text
    • http://mivetys.xyz/808735480792oohu.pdfIn PDF document text
    • http://goligofalu.medianewsonline.com/32727418753.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486742/normal_605025b158382.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fuguzametekobo.myartsonline.com/artemis_fowl_book_2_the_arctic_incident.pdfIn PDF document text
    • https://s3.amazonaws.com/navoburarovada/gimivirozoxu.pdfIn PDF document text
    • https://s3.amazonaws.com/bupijila/corporate_responsibility_report_2017.pdfIn PDF document text
    • https://bdc3fad0-85dd-4e34-85f7-620d54d4ff6f.filesusr.com/ugd/10cedf_8aac78c974df42509e70e607092201d0.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/gupojakami/books_of_the_bible_list_printable_bookmark.pdfIn PDF document text
    • https://147762ec-90f0-4523-8579-43cb3cd17c82.filesusr.com/ugd/6c48b9_de2424571e0b4d71bcbb02896f8d28ae.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/nokiva/breville_coffee_maker_owners_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/tudawufed/graphing_inequalities_on_a_number_line_answers.pdfIn PDF document text
    • https://cda84be5-0c54-4c05-8389-97bb004c798d.filesusr.com/ugd/fa9f00_b7d33ea4018540aab6dbe591f0fe6d89.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/napoledunadigo/remembrance_day_poem_template.pdfIn PDF document text
    • https://s3.amazonaws.com/gowebabuxogiro/dietary_guidelines_for_babies.pdfIn PDF document text
    • https://5fb42ee6-a9be-400a-98f2-f9d4b9f720c8.filesusr.com/ugd/1813b3_e035ce371ece4a628834c9a878dff0fc.pdf?index=trueIn PDF document text
    • https://a1d1c4ac-cf1d-4c58-861c-45d1188f4b60.filesusr.com/ugd/052f3a_2405fa21b00f4f14a620ea9126af11e1.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/dudurat/pepobemiwud.pdfIn PDF document text
    • https://s3.amazonaws.com/mujesogi/napoluvegig.pdfIn PDF document text
    • http://zokaramizixa.atwebpages.com/bipukituwe.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_off00011c84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C84 5056 bytes
SHA-256: 33df2307bfe417efe1a9599aad1e066a9a150d701fb24092d8f26c4a3c55ca4c
font_01_sfnt_off00012da2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12DA2 12052 bytes
SHA-256: 64370ee26ddc01cc956c686a4ab1dc322285e80f1e5310369c1e18b93478264a

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