Malicious PDF — malware analysis report

Static analysis result for SHA-256 09fdfd85cf080045…

MALICIOUS

PDF

65.7 KB Created: 2020-11-02 06:45:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 65bbf265e2d814a5100c62bc61a99df2 SHA-1: 84fe5539873762123cf0d1759a405ab6e4fdd70d SHA-256: 09fdfd85cf080045a0234ee40c5f5c431a66faf2b0993ded7aeb437058387383
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document contains numerous embedded links, with the primary URL identified as a malicious redirector. The heuristic firings indicate a link farm designed to direct users to potentially harmful content. While no scripts were explicitly extracted, the presence of embedded URLs and the ML classification strongly suggest malicious intent, likely related to SEO spam or phishing campaigns.

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://gettraff.ru/strik?keyword=asagao+to+kase+san+wiki In PDF document text
    • https://melegejisud.weebly.com/uploads/1/3/1/3/131379421/e8eda47.pdfIn PDF document text
    • https://zosupexaduj.weebly.com/uploads/1/3/0/7/130738593/886744.pdfIn PDF document text
    • https://gofobodobade.weebly.com/uploads/1/3/4/4/134444694/zakaled.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369794/normal_5f96859500f97.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369302/normal_5f8f783b6911a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.thdl.org/http://www.thdl.org/TibetanIn PDF document text
    • https://uploads.strikinglycdn.com/files/c43b3824-6d1d-474e-aff3-5b7661d812b6/wevepo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0d100872-88a7-4065-8940-58ff4152d3dc/92475456112.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/59344f38-01da-4de1-9d2f-d0124acbf4d6/lab_5_cell_respiration.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f305fc9a-8e05-4ff6-8d14-bb860acb6f59/95390887968.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7dbb5fc3-59b5-46a8-91d3-873033420afc/new_orleans_stripper.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/24426689-6f72-40cd-8356-9c896c967eef/zavijokutobofo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/af7256ec-30ab-460a-9382-bf7c3e1c1168/kevitugixudisavagu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dbb2f4c3-d874-41a9-a799-b9f158e89962/debelanazujogegomefatovo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/06a4af5b-9f04-435d-aa28-13297fe2d871/fedefujod.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
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlTibetanIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008679.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8679 2856 bytes
SHA-256: 2cdd336d4ad4698270d9077a3b8ade5aca6d4decd0916d5d918882b18b5a1806
font_01_sfnt_off000090a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90A4 4868 bytes
SHA-256: 10fd2f2e0b381cf99ac1fb5d848ea63f84996610ad3c8be86ced3339bb29893b
font_02_sfnt_off0000a166.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA166 9580 bytes
SHA-256: 65135367b69cc19942bfa7499c3c8aa37c27e6ec4b49d2cd6d852764209d1106
font_03_sfnt_off0000b4d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB4D7 12676 bytes
SHA-256: 7f0a84ba4741e5cfef03a56039485a68335f9744720834df85bff992f9fff860
font_04_sfnt_off0000de4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE4C 17044 bytes
SHA-256: 5dcdf6b0c5e0b454791cbad2022671b6ee290a2c26fe8075c4aa994a00efcc3a

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