Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ec69efe2dc2e364…

MALICIOUS

PDF

80.8 KB Created: 2021-03-10 10:08:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 8abecde9936f6c6eaa3610226a928531 SHA-1: 96513f5f0726bf109f6d4a0d39fdbf5c2c3a9bca SHA-256: 4ec69efe2dc2e36446b6da4c3d63df367c47b6a61575ef007b5e244e6917359f
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, a technique often used in SEO poisoning or phishing campaigns to redirect users to malicious sites. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, with one prominent example being http://vabenawak.iblogger.org/78080695995.pdf. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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=west+bend+bread+maker+41085+parts PDF link annotation
    • http://vabenawak.iblogger.org/78080695995.pdfIn PDF document text
    • https://marabobufazezi.weebly.com/uploads/1/3/5/9/135992859/aeebe96.pdfIn PDF document text
    • http://kawafopi.mygamesonline.org/compaq_presario_cq57_ethernet_drivers_for_windows_7_free_download.pdfIn PDF document text
    • http://tiwilofojifig.sportsontheweb.net/60792175097.pdfIn PDF document text
    • https://sijetuso.weebly.com/uploads/1/3/4/4/134499475/5523393.pdfIn PDF document text
    • http://pifowovumuwe.medianewsonline.com/59139495293.pdfIn PDF document text
    • https://vasanawibef.weebly.com/uploads/1/3/4/6/134651618/ramowi.pdfIn PDF document text
    • https://gipenozup.weebly.com/uploads/1/3/1/0/131070487/jesupisevuw.pdfIn PDF document text
    • http://mawosatejojeka.sportsontheweb.net/tunakisaloxawavezewu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://87b84290-c0b3-4c73-97a1-3d59c64c3f69.filesusr.com/ugd/c638b7_198edd2483854d30858831f50ca8dba9.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tevomenil/a_dance_of_dragons_download.pdfIn PDF document text
    • https://b9264059-5ce6-458a-812b-58b21e0c51d1.filesusr.com/ugd/9a3dc1_9245a5a440fd4d5f8a3d2fd5e32ba836.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tixedujegibex/icom_v8000_for_sale_philippines.pdfIn PDF document text
    • https://4adff18d-dc39-4349-be2c-eeb12737f1cb.filesusr.com/ugd/9117e0_e971a162ff1b482ab0dc52b22b927cd6.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/vapite/why_refrigerator_freezer_not_cooling.pdfIn PDF document text
    • https://6a24fdd2-d4a5-4c4b-882b-0f3115751bcf.filesusr.com/ugd/04e6f9_7336941596e7487f9e600c0b1d3c6493.pdf?index=trueIn PDF document text
    • https://0502d5d0-a0f5-47b8-bc1c-644c46e4e431.filesusr.com/ugd/6cabbb_3544b5461e004d7092205926bb619d4a.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/mujesogi/fevurodiloruwo.pdfIn PDF document text
    • http://namanowadofa.rf.gd/what_is_ibd_stock_list.pdfIn PDF document text
    • https://s3.amazonaws.com/temujonuwu/xuvemerupizo.pdfIn PDF document text
    • https://s3.amazonaws.com/fewifuwu/the_imitation_game_theme_piano_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/falejogajir/agria_pet_insurance_claim_form.pdfIn PDF document text
    • https://s3.amazonaws.com/nagev/372086983.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_off0000f7ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7ED 5888 bytes
SHA-256: 398e395908889ec82da4497c8a6c84e168da59be64e5ac06f64cafbb2cd8503b
font_01_sfnt_off00010bfe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BFE 11740 bytes
SHA-256: c83e4c8b600ab3c2cab9a74ef921ea1c2fa2ecf3efcb8993a2eb8d5e64538199

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