Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf7205e727d73981…

MALICIOUS

PDF

74.1 KB Created: 2020-11-28 18:57:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: f1cb4704dda5a2b753fde26f369853b5 SHA-1: b2947fb6bea19a1eef355f6d1ed791915355c25d SHA-256: bf7205e727d73981707e1a85c07555947d0884ef9c403a4d374bf6127c56fa34
214 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 and routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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://traffmen.ru/strik?utm_term=holy+grail+quest+guide+osrs In PDF document text
    • https://sopopubepomexak.weebly.com/uploads/1/3/4/2/134265445/jazegutegijo.pdfIn PDF document text
    • https://lunejuwibamir.weebly.com/uploads/1/3/4/5/134587588/lalopum.pdfIn PDF document text
    • https://mupawume.weebly.com/uploads/1/3/4/3/134365579/4497935.pdfIn PDF document text
    • https://vagomonezupu.weebly.com/uploads/1/3/4/4/134403629/9846486.pdfIn PDF document text
    • https://jusunusimonaka.weebly.com/uploads/1/3/4/7/134717465/527c03d3f.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/f9d5bc28-652b-454e-958c-ac3056e05633/13830311876.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9c00e619-88d9-4bae-a0a5-6444f157b021/tlc_thin_layer_chromatography.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/981ed95a-6fe1-4565-9d7a-2af7d07d2e51/steve_mcgarrett_e_catherine_rollins.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b59c728a-8797-4418-a98b-6ca53608e1e8/bulgarian_last_names_and_meanings.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/77c1051e-61e5-4d5c-ba13-2a12a54174cd/dark_souls_1_best_pve_dex_weapon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0d04bc47-e851-462d-aa78-3b1f1fb4f475/canola_growers_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d0a171cd-65a1-4ae3-9f82-e0342b460e01/assistir_flash_4_temporada_superflix.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/38a1c5e7-7e20-4699-89c2-f621de77093b/amsoil_gear_oil_near_me.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6c3fd9bb-b90e-48d0-b96c-baf4c4019661/zakejim.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7e304f89-f47f-417e-b4ec-c83d601c5ca6/noam_chomsky_how_the_world_works_epub.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d9fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9FA 4960 bytes
SHA-256: 27cd584514ad4bea596f86243b3abd15975428b67049fed6c56035ee5fda7811
font_01_sfnt_off0000eae1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAE1 10076 bytes
SHA-256: ef15abf9e7d6455a996edb6abfc38cca1ea34f4fb5f7884824018adbd0a4154a
font_02_sfnt_off00010d50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D50 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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