Malicious PDF — malware analysis report

Static analysis result for SHA-256 802c33f0445fd0ab…

MALICIOUS

PDF

82.9 KB Created: 2021-03-20 14:25:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 76c883f89d0cf30bbb6683caf6c2800d SHA-1: 20104d133569bbaab74137c434d36670f8d0ca09 SHA-256: 802c33f0445fd0ab26ae93314f2d519c5d46058b88c24b68cbf296f55ce02701
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, many of which are to SEO-optimized content farms, suggesting a phishing or malicious redirection attempt. The ClamAV detection and ML classifier strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs point towards a phishing campaign designed to lead users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://kuzutuzo.ru/strik?utm_term=how+to+make+a+dog+dress+without+sewing PDF link annotation
    • http://zonokiwuwagupu.getenjoyment.net/how_much_do_soccer_referees_get_paid_in_south_africa.pdfIn PDF document text
    • https://pesiwuveso.weebly.com/uploads/1/3/5/3/135392822/4ba6c8c0fc4c8.pdfIn PDF document text
    • https://cdn.sqhk.co/vumusokutil/OifPbgc/gotidolotosupus.pdfIn PDF document text
    • https://cdn.sqhk.co/pigexebobe/ifiaLhi/space_flight_simulator_game_pc.pdfIn PDF document text
    • https://cdn.sqhk.co/wewowedim/hjjNhdG/mesh_dipper_catfish_dip_bait_holder.pdfIn PDF document text
    • http://widonatozeg.mypressonline.com/arduino_mini_pro_schematic.pdfIn PDF document text
    • https://xavidupi.weebly.com/uploads/1/3/4/7/134723560/2620837.pdfIn PDF document text
    • https://cdn.sqhk.co/zujumatatub/vzAifjb/87919157824.pdfIn PDF document text
    • https://rofekituluz.weebly.com/uploads/1/3/2/3/132303072/6361679.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://f904ef53-caa1-4f0f-8a97-c50675c03ece.filesusr.com/ugd/2f8cea_84a58c05082542daac2ffc9ae4f876d6.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/lorugipopuxe/cual_es_el_nivel_mas_alto_de_blindaje.pdfIn PDF document text
    • https://s3.amazonaws.com/sedimeraxufi/17680556140.pdfIn PDF document text
    • https://5637a596-61ce-4e67-8953-8fd9cb84b940.filesusr.com/ugd/c20ea7_442f4923971641a6b8d076875d8b11d4.pdf?index=trueIn PDF document text
    • https://6c892e0d-5736-4b4a-96a3-cd490fd1fe3d.filesusr.com/ugd/1407cd_e7881a94b9314eb2a1e49d9328d44e88.pdf?index=trueIn PDF document text
    • https://dec4a425-646e-450a-80ca-a73a75d058ad.filesusr.com/ugd/ba3095_838100cffc4545beb39e4113154d0dfc.pdf?index=trueIn PDF document text
    • https://7be326e9-a1fd-4761-a84c-83c904220737.filesusr.com/ugd/37e945_af5b86bb207140b4954d8b2c7b9c14f5.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/gedexim/mastering_the_art_of_french_cooking_2_volume_box_set_a_cookbook.pdfIn PDF document text
    • https://95043331-d9de-4498-ad98-35b8ac3ee23f.filesusr.com/ugd/5740b2_be341bbc5cf54db4b86086c96680d6c0.pdf?index=trueIn PDF document text
    • https://cc6d8859-fc08-4100-a073-55b48c5addfc.filesusr.com/ugd/238140_5812006fd814453c9204917d01435832.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/fekaduvopigab/wenezolelivag.pdfIn PDF document text
    • https://s3.amazonaws.com/bepukuba/easy_german_chocolate_sheet_cake_recipe.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000107e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107E0 5324 bytes
SHA-256: 81935f8ae0f8f47c33bd025ce0a4eb9b47f71fb0d44ce794b5fb280ef84f881c
font_01_sfnt_off000119dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x119DC 10596 bytes
SHA-256: 64718150e98b5593d430d7f8a5993c48e2cf0f8a67a9df003c942c200f07b2fd

Open this report in the interactive analyzer, or submit your own file for analysis.