Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5969870be749316…

MALICIOUS

PDF

71.5 KB Created: 2021-03-19 09:28:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e0d14120844c334838be2227bd8f1576 SHA-1: 6756f0edb99aa818d47c4ce41186cba831ef8c46 SHA-256: e5969870be749316270111e068d5e986b17209cbaae3b60965ea6600379f89f0
96 Risk Score

Malware Insights

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

The file is a PDF document identified as malicious by ML classifiers and ClamAV. It contains an embedded URI pointing to 'https://resalured.ru/strik?utm_term=jumpsuits+and+rompers+for+weddings', which is a strong indicator of a phishing or malware distribution attempt. The document body is heavily obfuscated, preventing a clear understanding of its specific lure, but the presence of the external URI is the primary driver for the attack pattern. No scripts were extracted, but the PDF structure itself facilitated the embedding of the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://resalured.ru/strik?utm_term=jumpsuits+and+rompers+for+weddings
    • https://static.s123-cdn-static.com/uploads/4445879/normal_5ffe2583258c1.pdf
    • https://cdn-cms.f-static.net/uploads/4387424/normal_602f1731c477d.pdf
    • http://manuximaxemeje.scienceontheweb.net/bible_commentary_on_the_book_of_genesis.pdf
    • http://zunololanuxigu.sportsontheweb.net/vicks_cool_mist_humidifier_liquid.pdf
    • http://mavafesumej.medianewsonline.com/30910299904.pdf
    • http://gudokevuxowa.22web.org/o_p_e_c_a_full_form.pdf
    • https://static.s123-cdn-static.com/uploads/4455684/normal_5feb967ff25d0.pdf
    • https://static.s123-cdn-static.com/uploads/4408188/normal_5fe2f7f0dcb22.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/5e4e6fe4-af53-495c-8488-2584a87a6e5c/how_to_read_kenmore_dishwasher_error_codes.pdf
    • http://zufejudo.epizy.com/tosawodenaxajemerezutit.pdf
    • http://mafodif.epizy.com/crysis_3_fling_trainer.pdf
    • https://uploads.strikinglycdn.com/files/3f7f6a6f-11bc-4aa7-8442-185e1cdff4f8/how_do_you_use_a_bissell_proheat_12_amp.pdf
    • http://xuxusemo.epizy.com/apostila_cade_simu.pdf
    • https://uploads.strikinglycdn.com/files/29b73f36-9b83-4183-98e8-3b966cb2e375/thinkorswim_app_tutorial.pdf
    • http://wejufutaz.onlinewebshop.net/is_vampire_diaries_age_appropriate.pdf
    • https://uploads.strikinglycdn.com/files/2fd6440d-420d-443a-93b8-738892db08a4/9769301231.pdf
    • https://uploads.strikinglycdn.com/files/cf22650b-9225-4e15-bc44-5c35735e6876/what_is_cord_blood_tissue_used_for.pdf
    • http://gipebevu.atwebpages.com/65493391236.pdf
    • http://vilatelisoto.onlinewebshop.net/23281452817.pdf
    • http://gupatevefojip.myartsonline.com/whats_the_renegade_song_from_tiktok.pdf
    • http://zopumukujo.epizy.com/15302733129.pdf
    • http://zepizevut.atwebpages.com/75532758126.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_off0000d94d.bin
2a917727047b0c03f76428df2cbd3e18cc7d36bbf8909304f3f28310ea7dfcdb		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD94D 5408 bytes
font_01_sfnt_off0000ebac.bin
3604894b04fda934fdbd4994997cc7e30681ca62a8a26469cf78fa8c6e4ee13b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEBAC 10840 bytes

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