Malicious PDF — malware analysis report

Static analysis result for SHA-256 d59c5890f14bb3ab…

MALICIOUS

PDF

81.3 KB Created: 2021-03-20 06:29:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 64ca041d2bf7b9bef97f996ccd79f30e SHA-1: ad5c35ea206717ea68362f41c561bd1fe3691262 SHA-256: d59c5890f14bb3abd6ef4f694091a424ac2a769f6336ceb8086e73a68c63e314
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, and multiple other URLs are present within the document. ClamAV detection and ML classification strongly indicate maliciousness, likely related to phishing or malware distribution. The presence of embedded URLs suggests an attempt to redirect the user to malicious content, potentially a phishing page or a download site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9967

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://nipisod.ru/award?keyword=questions+without+auxiliary+verbs+exercises+pdf
    • http://saleproducts.pro/rivovwxo4b.pdf
    • https://cdn-cms.f-static.net/uploads/4494166/normal_60228dcb606e6.pdf
    • https://cdn-cms.f-static.net/uploads/4501479/normal_604afaf487ddd.pdf
    • https://cdn.sqhk.co/nokotadi/hhifibD/84375579399.pdf
    • http://klyshsheff.xyz/68000856619bptj9.pdf
    • https://cdn.sqhk.co/buganisazobu/hhcbhgY/sup_multiplayer_racing_apk_indir.pdf
    • https://cdn.sqhk.co/vopunokapire/pB5btjd/60783079024.pdf
    • http://letnesil.xyz/sanitary_napkin_vending_machinebh35t.pdf
    • http://sexesex.site/ninja_jungle_adventure_modehth8c.pdf
    • http://shopbest.online/nokuwanada3zqpo.pdf
    • http://vuvodagedene.scienceontheweb.net/plane_shift_amonkhet.pdf
    • https://cdn-cms.f-static.net/uploads/4449768/normal_6045f28593a19.pdf
    • http://espacecmb.xyz/hitron_cgn3acsmr_manual4vwm7.pdf
    • http://216tilford.com/polugebv2w1x.pdf
    • https://cdn.sqhk.co/temazajilib/CvTh5ha/kopufipetamaxe.pdf
    • https://cdn.sqhk.co/mujexoxa/1z6DRFN/gudumimorajapiw.pdf
    • https://static.s123-cdn-static.com/uploads/4367632/normal_5fffc4ee153b6.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://lufopudizomuv.atwebpages.com/70666562561.pdf
    • https://uploads.strikinglycdn.com/files/5cdc9400-3fae-4df8-979d-6d99d72c1f77/62324004564.pdf
    • https://uploads.strikinglycdn.com/files/709fff36-5b77-4ac3-9af9-41cd8d831d79/xelapovikejubaj.pdf
    • https://uploads.strikinglycdn.com/files/c5ea4d66-506a-43dc-9182-1c6a7c50e2e3/intex_sand_filter_timer_settings.pdf
    • http://ralirajuz.atwebpages.com/atlas_auriculoterapia_gratis.pdf
    • https://uploads.strikinglycdn.com/files/50eb4ef0-582e-48bf-a6cd-ec4d2ccbc7ce/hard_bible_trivia_questions_and_answers.pdf
    • http://tikeresepujel.onlinewebshop.net/luwenaruloresurifusaf.pdf
    • http://pawepeg.atwebpages.com/67826922842.pdf
    • https://uploads.strikinglycdn.com/files/668f975a-bf57-48a3-8728-1fad13b3dfe1/r_guide_for_beginners.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_off0000fd36.bin
a83e73739c547666f1c6696776e697f02e0e5a419f6e8355c9b12e2cca16ff7f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFD36 5768 bytes
font_01_sfnt_off000110f1.bin
c2aad5236c820cd5905cb26cc713fa01de53748c59bde3393abcc7dc89a122c1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x110F1 11316 bytes

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