Malicious PDF — malware analysis report

Static analysis result for SHA-256 11352dc12c3dccd6…

MALICIOUS

PDF

80.0 KB Created: 2021-03-15 08:11:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 4bffa70459b111edab8aee36f78f6322 SHA-1: 2c0954953cc9f8a6e6dde11350d630b5364f0d84 SHA-256: 11352dc12c3dccd65197dd78d94a9a4886698606fd6fd8040bac72c601a54b42
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 0.9994

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 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://seumenha.ru/strik?utm_term=famous+passage+from+alice+in+wonderland PDF link annotation
    • http://luminar4-download.xyz/vudutiledareseduzbz29j.pdfIn PDF document text
    • http://4kuhd.me/can_you_trade_options_for_a_livingh7yri.pdfIn PDF document text
    • http://smeshnoykir.space/daftar_obat_analgetikx76ju.pdfIn PDF document text
    • http://luminar2-download.xyz/50834018171brhui.pdfIn PDF document text
    • http://findattime.com/how_do_you_cook_a_spiral_ham_in_an_oven_bag0k79y.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://d52369c8-37f2-40d9-9d5f-d682b3b4a2e4.filesusr.com/ugd/6d5a7b_8ef3de5742474cc79cd5f6cde37fd72a.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/b1862665-0323-4665-98f2-4e0a79c1517e/peter_frampton_do_you_feel_like_we_do_live_1976.pdfIn PDF document text
    • https://s3.amazonaws.com/wuxupewu/lapixatap.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/39a4eab5-f909-401a-898e-e5685f90d538/grounding_techniques_for_anxiety_therapist_aid.pdfIn PDF document text
    • https://d1897088-ef6e-4b60-8303-910b4b551fc1.filesusr.com/ugd/4cfbbd_1e9fad7daa37478795d3ece815d90ae5.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/sesafefanulokam/wilunibifabidazalidew.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6e45253c-2b04-4d4a-8447-f2075ba6af10/85649267544.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ac75e774-5962-483b-842f-72658dae2a82/temovuradazorulos.pdfIn PDF document text
    • https://s3.amazonaws.com/pazovugal/breeds_of_dairy_buffalo.pdfIn PDF document text
    • https://69f6cc44-9198-4e41-bafa-43503dba92bf.filesusr.com/ugd/dec231_03fa1d02593e4250a79e86683c90e182.pdf?index=trueIn PDF document text
    • https://189c2d36-84ff-4b81-9465-96c33c1d3b91.filesusr.com/ugd/35ddae_f3c82bc1702e42b8bc61ef8fdb7071d4.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/fulosobezur/mla_works_cited_practice_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/nisoxow/xipivobitivubupib.pdfIn PDF document text
    • https://s3.amazonaws.com/tevigotu/prenuptial_agreement_template_florida.pdfIn PDF document text
    • https://s3.amazonaws.com/jevopemosod/kupaxabebujijazopixonojo.pdfIn PDF document text
    • https://s3.amazonaws.com/sojenozap/wiwelijam.pdfIn PDF document text
    • https://s3.amazonaws.com/wefemabeni/jozipoluritutufibanesu.pdfIn PDF document text
    • https://4a5660cc-52a2-48ff-9acb-4b4f1704cb6e.filesusr.com/ugd/81868d_1305d806306847428b3dbf7777b55225.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 8

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_off0000fb4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB4F 5520 bytes
SHA-256: e8176522b0330cdfdc1771eae4f51117368a6a5144f9e1128d2c2b3027b06c0b
font_01_sfnt_off00010e18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E18 10712 bytes
SHA-256: 11d7099f5699e1128bda3e87bfc08ba1fa27f607f7c7821e8ecc3d85198263f4

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