Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd7a83181d147ca4…

MALICIOUS

PDF

93.2 KB Created: 2021-03-10 23:36:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 29a15cd990e1ea71aa775cdec2f99779 SHA-1: d9c86837fdde13f18bf9ec0564308febdd4cee4d SHA-256: cd7a83181d147ca43f2189b1815801e4770c45e0e2dccf7a45a7e7d3e13f2c2a
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, which is a strong indicator of a phishing or malware distribution attempt. The ML classifier and ClamAV detection further support the malicious nature of this file. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site, likely for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://botokaw.ru/award?keyword=estudio+descriptivo+correlacional+pdf
    • https://static.s123-cdn-static.com/uploads/4481067/normal_5ff286940a6e6.pdf
    • https://cdn-cms.f-static.net/uploads/4413986/normal_5fd628faf2c89.pdf
    • https://cdn-cms.f-static.net/uploads/4450639/normal_602560e30f8ac.pdf
    • https://static.s123-cdn-static.com/uploads/4393035/normal_5fe320d5b6218.pdf
    • https://static.s123-cdn-static.com/uploads/4453327/normal_5fdf2b6d491f5.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/robumuduluwise/clyde_one_5k_minute_questions_and_answers.pdf
    • https://uploads.strikinglycdn.com/files/fd420d80-f929-4fa9-8ec4-2723c04734e7/65219397265.pdf
    • https://s3.amazonaws.com/selivuvumepaveb/nekurujeraruzun.pdf
    • https://uploads.strikinglycdn.com/files/0dd76b7d-2fac-4c07-9391-3cba9ce14ecc/what_food_to_avoid_while_on_keto_diet.pdf
    • https://uploads.strikinglycdn.com/files/b5d3ebaa-446c-42e1-aff6-fdff50fb81f5/29219334290.pdf
    • https://uploads.strikinglycdn.com/files/fec9fa10-40b0-4c0a-b35f-1f0750a2316a/kizejetiduve.pdf
    • https://uploads.strikinglycdn.com/files/731a9e97-cb78-48e5-a772-905f02849d84/ativa_16_sheet_shredder_reviews.pdf
    • https://uploads.strikinglycdn.com/files/0e5a58cd-c529-45cc-8314-0cff35c3423b/93984889606.pdf
    • https://s3.amazonaws.com/sazixipame/difarowebuwakosipexomam.pdf
    • https://uploads.strikinglycdn.com/files/7445be68-db3b-4a54-8ee4-b3395723e50d/city_of_thieves_adventure_time_full_episode.pdf
    • https://uploads.strikinglycdn.com/files/4724703a-90c7-4ff5-af99-c78bb19d25dd/wagner_power_steamer_715_reviews.pdf
    • https://uploads.strikinglycdn.com/files/89e1e3be-6d84-4801-bb03-9622cf2f69b1/where_are_the_indian_mounds_in_ohio.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000120d8.bin
5cb61c670267292abade63507f694ed9f848ded3a9b5075fc300af0329e90511		 pdf-font-stream PDF embedded font (sfnt) at offset 0x120D8 5048 bytes
font_01_sfnt_off00013213.bin
e3d8f68a91d9814652042025abee5cc0ff7cc5c67bc6bda3b50b7add83ffc76e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13213 11932 bytes
font_02_sfnt_off000157f7.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x157F7 4324 bytes

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