Malicious PDF — malware analysis report

Static analysis result for SHA-256 ccc33072b540bc86…

MALICIOUS

PDF

91.2 KB Created: 2021-04-08 18:04:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 4ea80f7088b924e3677a6c6361a4497d SHA-1: 194bca94eb167a4163b5868d4349637d44519467 SHA-256: ccc33072b540bc8601a8be937242e13a1a7e2d44865da879173571bfa4b8fcee
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or trojanized document. It contains a link to a suspicious URL, 'https://soxebez.ru/strik?utm_term=little+house+on+the+prairie+youtube+season+6', which is likely intended to host a malicious payload or redirect to a phishing site. The document body, though heavily obfuscated, appears to be a lure related to a YouTube search query.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://soxebez.ru/strik?utm_term=little+house+on+the+prairie+youtube+season+6 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4409113/normal_60047fed2c58a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385880/normal_6015b740b2af1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366331/normal_5ff51ebccf244.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482413/normal_600c8c001dde5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423443/normal_6023ca4b01fab.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/gavobawum/what_is_the_american_education_system_based_on.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/87b1c09d-0230-46d6-97bc-de9c149527b4/40149980636.pdfIn PDF document text
    • https://e7c02ae7-ba66-49ef-8fe7-d4c265c54a1b.filesusr.com/ugd/bc5701_adc830d8a64f4133b72eab8666ddf231.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xotomisen/carpenter_song_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c26de732-3bd3-4c50-88e8-6c9317e68ece/hamlet_full_movie_free_streaming.pdfIn PDF document text
    • https://f8206d31-21c4-4aef-9da9-e4259ded718a.filesusr.com/ugd/c2bdac_ca6cf11c678d43c3ba7852c75e23bad6.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/1dc7943f-910a-4fed-9756-14f73b1665bf/47812452009.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0ad079ab-3e65-418e-9fa6-f3caca16fae8/mantis_electric_tiller_home_depot.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ff5a81da-d5c8-4ee3-a7d7-291df7a73a4b/pro_bono_criminal_defense_lawyer_in_orange_county_california.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8430d8a0-e632-4d66-b495-e7493888d1fa/19063630575.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/028f9a8e-ee9d-4284-ac84-657866e492c6/saying_to_remember_phases_of_the_moon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/82c04f69-ce0c-4ca9-8289-54d945900cd6/does_apple_pencil_1_have_pressure_sensitivity.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2d4922c3-5908-44ad-b934-94de94ea459d/noxurosasofuxusozovufu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9833be72-635b-42fd-91e0-9b85c3e6c609/casio_g-shock_radio-controlled_solar_powered_manual.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_off000127df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x127DF 5244 bytes
SHA-256: f3fd74df268eb4a77c664feebf4f30b2408e41b4d59f384aea331519bf86c79c
font_01_sfnt_off000139ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x139AE 10716 bytes
SHA-256: 646042f04a852a12c1de00029d854914b11e05dbc6fa923506b92979a015ab8c

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