Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e07b0b72cebed37…

MALICIOUS

PDF

106.0 KB Created: 2021-02-22 17:28:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: cc7f584aaaebb765fc37cbf80352a5bf SHA-1: 8aec2b62f4f05780720b1c0cea9c3b89eac70d5d SHA-256: 2e07b0b72cebed3772f63a92f2a8cca1e806cebd7e511c7534ef39bf17c3e8f7
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document contains a large number of external links, many of which point to other PDF files, suggesting a link farm or SEO poisoning tactic. The primary external URI, 'https://seumenha.ru/strik?utm_term=the+fall+camus+book+quotes', is presented in a way that mimics search results, likely to trick users into clicking. While no scripts were explicitly extracted, the PDF structure and numerous external links are indicative of malicious intent, potentially leading to phishing or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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=the+fall+camus+book+quotes PDF link annotation
    • https://mokapojigum.weebly.com/uploads/1/3/4/6/134690111/9d1152690c052.pdfIn PDF document text
    • https://fukimeremunosav.weebly.com/uploads/1/3/1/3/131379236/kodiza-rakov.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392652/normal_5fdb1e22a3131.pdfIn PDF document text
    • https://disadoxamegipu.weebly.com/uploads/1/3/4/5/134527150/pevawituxasi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401525/normal_600c45a861275.pdfIn PDF document text
    • https://cdn.sqhk.co/tuwetebep/h4CjeeG/nfl_fantasy_draft_cheat_sheet_excel.pdfIn PDF document text
    • https://cdn.sqhk.co/wirowanorax/i0xhdDo/qing_dynasty_vampire.pdfIn PDF document text
    • https://fetarulezi.weebly.com/uploads/1/3/4/4/134487317/794258ee4fd2bd6.pdfIn PDF document text
    • https://cdn.sqhk.co/serojimo/yR1ggjV/geometry_wars_retro_evolved_2_xbox_360_download.pdfIn PDF document text
    • http://girlita.space/ralepinu0ust.pdfIn PDF document text
    • https://nidimikijugura.weebly.com/uploads/1/3/4/7/134710695/finivinori.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/wemofodi/angular_2_formgroup_disabled_input.pdfIn PDF document text
    • https://s3.amazonaws.com/mozirolinitaje/10304933015.pdfIn PDF document text
    • https://s3.amazonaws.com/numunenoji/71481621279.pdfIn PDF document text
    • https://s3.amazonaws.com/jikopot/analytical_geometry_grade_11.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_006_off00016fcc.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x16FCC 24080 bytes
SHA-256: 6b5b8e2b7cc593194fe84fe39ebbb788d3a23c8dee20703ba9262184a8845ffa
font_00_sfnt_off00012d41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12D41 5304 bytes
SHA-256: 7f69d3f5b6255f34ed6680c3798eb72018cdc32bd8d8d8a0d8a56a911e5cd98c
font_01_sfnt_off00013f2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13F2D 3720 bytes
SHA-256: b91f3c26f37c28538ed09035cbea6f9221827f1e30b50c452f08cc820bcc167b
font_02_sfnt_off00014a90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14A90 10884 bytes
SHA-256: d25f5c294cd1f3250bbc5eab4386b8538fd407a577e3ddcc62cddbc9180dcc84

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