Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed8a5093dbf275b7…

MALICIOUS

PDF

85.7 KB Created: 2021-01-06 08:50:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-02
MD5: 4e4117c5994df78d1311ec17fad62272 SHA-1: 7382c49ebb49edf4ca5c402006e1d4c9d064b171 SHA-256: ed8a5093dbf275b7717b3e1faeafbda4bab4461cf16681079bb2efdfbc9ab39c
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The file contains a large number of external links, many pointing to SEO-optimized PDF content, suggesting a link farm or phishing operation. The primary malicious URL identified is trafffe.ru, which is likely used to host or redirect to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://trafffe.ru/aws?utm_term=mapa+de+asia+sin+nombres+pdf PDF link annotation
    • https://sepikupi.weebly.com/uploads/1/3/0/7/130738949/7583260.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411683/normal_5faf70e05fc3e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445130/normal_5fa077ba0bcd6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421462/normal_5f968b66dfc5b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407552/normal_5feb1b1cc2a99.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449184/normal_5fcd87a4b2d06.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409238/normal_5f9d046f87213.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403282/normal_5f9f60e09b5c6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368505/normal_5f8e6ce10954c.pdfIn PDF document text
    • https://kalozepi.weebly.com/uploads/1/3/0/8/130814360/lodewori_pijatiretuwad_xaboxe_xadanabu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/b55ec498-5c62-4bf0-a3bd-a49dba72ef05/rudotarazudub.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8605d4fd-2511-4d6e-81c7-b9787989d6ca/juwomosigukas.pdfIn PDF document text
    • https://s3.amazonaws.com/fosawef/sintesis_de_los_lipidos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/77349cbb-06b4-46ee-ab04-cf8554562713/12575867186.pdfIn PDF document text
    • https://s3.amazonaws.com/norozovijalu/passive_and_active_form_exercises.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.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e60b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE60B 5008 bytes
SHA-256: 958fb262992e8c552f708ea93430dfdc6ec9ddb1ef2964be7c39d9c1ac2f6a74
font_01_sfnt_off0000f6e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6E0 3720 bytes
SHA-256: d0c9e33916e9e64e42e31bcf0d345f6c2fcd41735b1a34df0119bd0eb1094281
font_02_sfnt_off0001023c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1023C 4608 bytes
SHA-256: 4e7ecdf32f1ca175a5752e17472b55a0c5694dffdfe5b3a2e19b9a267fa20d1f
font_03_sfnt_off0001126e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1126E 11888 bytes
SHA-256: 0196d1c729234ed144c8003d9c2e2112f571e4fb73378e25710696fc07c48e74
font_04_sfnt_off00013916.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13916 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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