Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6291f6ae2f975e9…

MALICIOUS

PDF

86.1 KB Created: 2020-11-10 18:08:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 7b0aef32e1289f1532f770a90e754c73 SHA-1: 2ceec33df1b25b4f65c16d9564f1ad90643df821 SHA-256: e6291f6ae2f975e91b822a8adb9296e1cd9bbd28955c1ea8024b9385d6d2d691
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 0.9995

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://trafffi.ru/strik?keyword=deborah+ann+woll+sandals PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366311/normal_5f990a0323b07.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388820/normal_5f9c45cc2b7d9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375886/normal_5f93b6f44f4d5.pdfIn PDF document text
    • https://kosemarenile.weebly.com/uploads/1/3/4/3/134315061/1cc52a1d0d.pdfIn PDF document text
    • https://luriwopowilexat.weebly.com/uploads/1/3/4/3/134338936/22156.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375358/normal_5fa9e8a2a9d04.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448538/normal_5fa7aae1a0e3b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://s3.amazonaws.com/sugosubexez/excel_project_worksheet_template.pdfIn PDF document text
    • https://s3.amazonaws.com/mibiwivanetuj/30262539636.pdfIn PDF document text
    • https://s3.amazonaws.com/rozebofukixus/fonunuwejuvagor.pdfIn PDF document text
    • https://s3.amazonaws.com/welanisowari/jebesekiwip.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/c_est_pas_sorcier_les_gaulois.pdfIn PDF document text
    • https://s3.amazonaws.com/kovilowab/jafufodotukosikatobu.pdfIn PDF document text
    • https://s3.amazonaws.com/xilasisefi/animal_jam_arctic_wolf_code.pdfIn PDF document text
    • https://s3.amazonaws.com/tirimofufemukat/t10_car_bluetooth_transmitter_manual.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_off0000db60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB60 3456 bytes
SHA-256: 925faacdced22769c009e95babf938789f339d7a47889f89c64d9da3e50251f2
font_01_sfnt_off0000e7c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7C5 5144 bytes
SHA-256: dbd1ebe8ea904c06e09d96cb1e15d9500ba441aee1bae09ad35238020a0b0eff
font_02_sfnt_off0000f947.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF947 3720 bytes
SHA-256: d5ecec3e822993868ba70e247019bcdb656a9fee58d620eb93bc70658e929280
font_03_sfnt_off000104aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104AA 12652 bytes
SHA-256: 0e4026d22467b9a550e51f219e6f0ce39fa538c7312f1cb20f04069dcfa72256
font_04_sfnt_off00012e32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12E32 8720 bytes
SHA-256: 8284ff9eda878ff9edc7e67a7441de0e583f6c894643f0014a5ba9a55fc9b786

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