Malicious PDF — malware analysis report

Static analysis result for SHA-256 baac768240435506…

MALICIOUS

PDF

77.4 KB Created: 2021-03-18 14:19:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ae6ac639adb030de8622aa0b3a14f2ad SHA-1: 23536ab8446e58dc3f9a69874ae4402415aa5f92 SHA-256: baac768240435506b998fffcf1c5775699cb94d4e4bfa1109e844e5f0b111bd9
156 Risk Score

Malware Insights

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

This PDF document contains a large number of external links, many of which are numerically or generically titled, suggesting a link farm or SEO manipulation tactic. The primary malicious URL, https://xezojetit.ru/aws, is likely intended to host a phishing page or a further stage of malware. The document's content, while appearing benign, is used as a lure to direct users to this malicious domain.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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-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://xezojetit.ru/aws?utm_term=how+to+become+a+certified+healing+touch+practitioner
    • https://vuwuzujos.weebly.com/uploads/1/3/2/7/132712237/8142341.pdf
    • http://fakexexu.sportsontheweb.net/basic_english_usage_oxford._download.pdf
    • http://warupipujamoru.sportsontheweb.net/postman_api_testing_tutorial.pdf
    • https://laxuwipulave.weebly.com/uploads/1/3/5/9/135956831/redumewo_remesipuv_xitijo_zijasudem.pdf
    • http://nidewopovuwubo.mypressonline.com/dekajajobavopitepipenofim.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/88bc823d-cceb-49fc-8b5d-0a8505987662/46750655400.pdf
    • https://9a89a7da-ede3-42eb-a537-7416be21eb2d.filesusr.com/ugd/aaaf79_2232a133f4774caeb6d2d217c1bf61c9.pdf?index=true
    • https://uploads.strikinglycdn.com/files/21c4b291-414b-414a-a406-f0646aab2d56/62026999082.pdf
    • https://uploads.strikinglycdn.com/files/3ac5a437-3721-438d-ab9b-914f8651233a/jump_rope_mat_reviews.pdf
    • https://2cc12256-1025-444a-bacb-901a9f007bda.filesusr.com/ugd/d1fcfc_9da78606871d43758c65ee7a48e69d09.pdf?index=true
    • https://uploads.strikinglycdn.com/files/76192f0f-1a77-4519-8a5f-f2a32771f0f8/87549350840.pdf
    • https://041f977c-1598-48cb-b578-3d63f550c8ab.filesusr.com/ugd/524ae3_37b06ac4d8784e6ea40c2ded5e041804.pdf?index=true
    • https://uploads.strikinglycdn.com/files/a4d3aa31-6760-495d-a274-06e8e4b42808/how_is_the_book_of_numbers_arranged.pdf
    • https://uploads.strikinglycdn.com/files/5b4cef4a-a029-4d0f-b9dc-fe0f0ef3f477/what_is_the_difference_between_relation_and_function.pdf
    • https://uploads.strikinglycdn.com/files/b81336a9-2c34-488a-aa57-69905273644b/tone_it_up_workouts.pdf
    • https://dd7ee03d-3646-4e01-a1e1-4c0a7e2c9e57.filesusr.com/ugd/d7ba0f_6e0f9fc708b142e893076f08a994d060.pdf?index=true
    • https://uploads.strikinglycdn.com/files/587aecae-65fe-47e2-b6e7-5c4a29c07e4a/jagigulupokaxabe.pdf
    • https://22e365c6-0853-42e1-82f8-83473bf9c0bf.filesusr.com/ugd/217d68_2ee6c80fdd4742e3b11f606c62c53a9f.pdf?index=true
    • https://uploads.strikinglycdn.com/files/eb46dbe9-ee77-46f0-b33e-6e379d69dc90/speed_distance_time_worksheet_ks3.pdf
    • https://uploads.strikinglycdn.com/files/2cf400e2-0d37-4248-8957-31b509284700/noguzob.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_off0000f0be.bin
05fcbbddd0610080942b335ec5966f73ec18ef10fd8cb14a3fa986b3f189f4b3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF0BE 5584 bytes
font_01_sfnt_off0001039f.bin
402864aa828e182b9b2dbd6c0b1b789d38cdb6e5fec689362308e89934d8898e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1039F 10656 bytes

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