Malicious PDF — malware analysis report

Static analysis result for SHA-256 fcc92bfea5f75709…

MALICIOUS

PDF

92.1 KB Created: 2021-03-27 14:01:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e70aede5aa479455f14cd3bf0199ffc7 SHA-1: eadea0ccb11690f473740efdf61146059e9b8cf8 SHA-256: fcc92bfea5f7570923dae6116e240b5780ddf97a6c27b545f12552570ec91e7f
156 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier. It contains a large number of external links, suggesting a link farm or phishing attempt. The presence of embedded URLs and the PDF_SEO_LINK_FARM heuristic indicate an attempt to direct users to potentially harmful external sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

Heuristics 5

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://botokaw.ru/award?keyword=agamenon+pdf+completo
    • https://femixazate.weebly.com/uploads/1/3/4/3/134363246/7879837.pdf
    • http://tobufasir.iblogger.org/words_bee_gees_free_piano_sheet_music.pdf
    • https://kabosasano.weebly.com/uploads/1/3/5/3/135398154/2714567.pdf
    • https://kufudazasa.weebly.com/uploads/1/3/4/6/134626120/b04defb921.pdf
    • https://linajijokib.weebly.com/uploads/1/3/4/0/134000065/afb19fa1671a0e4.pdf
    • https://sagupegijugix.weebly.com/uploads/1/3/4/4/134443219/notobuwojuvunakuzase.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://24976a62-ea59-4ca6-8500-d0bd08f9a094.filesusr.com/ugd/65a075_821e29166d1d49f1bb25a6bc5ca07d34.pdf?index=true
    • https://uploads.strikinglycdn.com/files/23079e86-f398-42ed-b6a8-9ab5c22caf18/99630820092.pdf
    • https://uploads.strikinglycdn.com/files/4e3fc44a-5d14-49d2-a429-f58f4dd5cc3b/65998026140.pdf
    • http://pogapebod.rf.gd/do_tenants_have_to_pay_for_carpet_cleaning.pdf
    • https://uploads.strikinglycdn.com/files/9a9325d6-b2aa-4a89-b33a-3d54fefffd9b/how_to_add_fuzzy_lookup_in_excel_2010.pdf
    • http://zenadeguposu.rf.gd/amplified_hebrew_to_english_bible.pdf
    • https://391e4f24-9fc9-4707-ac06-338edcd9f959.filesusr.com/ugd/110ef3_7d1f86e3daf744608de0777eeff8b3a7.pdf?index=true
    • https://46a1ac71-481d-4a85-b709-d40f3a189542.filesusr.com/ugd/143c98_01346dc6c2f04184b400ed3e2307e802.pdf?index=true
    • http://juwejaju.rf.gd/insuficiencia_cardiaca_aguda_y_cronica.pdf
    • https://s3.amazonaws.com/xukonakefules/water_flosser_review_consumer_reports.pdf
    • https://s3.amazonaws.com/mukutud/how_to_qualify_to_be_an_army_ranger.pdf
    • https://2178e3ec-2e0a-46e0-af35-d8a6fdfeb21a.filesusr.com/ugd/c411cf_468ff12682eb492795fe302899ac9fbb.pdf?index=true
    • http://tipofib.rf.gd/tejulukuxorubulelemim.pdf
    • https://s3.amazonaws.com/sixenogafopoj/ctet_2018_answer_key_official_website.pdf
    • https://uploads.strikinglycdn.com/files/d79a2c55-8695-4faf-bffc-66f643e99c30/how_to_choose_a_living_trust_attorney.pdf
    • https://09d56968-2ae9-412d-ad86-e67dc63a1c23.filesusr.com/ugd/e8b91f_183631e256654742b592326ceb9344fd.pdf?index=true
    • http://zinebozozapi.rf.gd/55992277843.pdf
    • https://s3.amazonaws.com/jajoxulabojaso/6135091448.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001220c.bin
a6972c06ad777a4bb01f845d19927014d3214220724df8afed073fc7d9cc2292		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1220C 5192 bytes
font_01_sfnt_off000133b3.bin
8d689ae119b13317ce24348011e8200b6e74b0ea172244cf6ad2ab1a90f02682		 pdf-font-stream PDF embedded font (sfnt) at offset 0x133B3 15048 bytes

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