Malicious PDF — malware analysis report

Static analysis result for SHA-256 d73f6fd9422ef689…

MALICIOUS

PDF

66.3 KB Created: 2020-12-24 17:24:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 334b28b6d068c5de1e9ad86db873a4bb SHA-1: 237f97bcf8dcea4b6c7a817492b24c86bc85b364 SHA-256: d73f6fd9422ef6896bf333871339752824410bdb1e5a080a48ff7bf8153d4eed
154 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a known malicious URL, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The ML classifier also strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains text related to 'Art wallpaper for iPhone X', suggesting a lure to entice users to click the malicious link. No scripts were extracted, but the presence of a malicious redirector is a strong indicator of phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://cctraff.ru/strik?utm_term=art+wallpaper+for+iphone+x In PDF document text
    • https://cdn-cms.f-static.net/uploads/4384323/normal_5f9aecca5cddc.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/xakajoziwibi/46341190581.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c0f21cff-2b03-4b85-9996-e0d90ddc29bc/totuporuzogejuvagojo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e62e4489-5f30-4218-b24d-7d2aedef370f/intel_wireless_ac_9462_driver.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/sojomiwotufosopaxadi.pdfIn PDF document text
    • https://s3.amazonaws.com/rupatojuko/39204844943.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/85af1f80-2072-49bb-9213-a1c97c25dea8/zogonukuwin.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dd45f937-3d8a-4094-8e08-a77114c36471/craftsman_weedwacker_17_25cc_gas_line_trimmer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7622fee9-b334-462e-bcbb-7427f2e86eaa/nubaxubiberozom.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7e39cd3d-4284-4af5-bc1e-c77fb092fe85/toshiba_comcast_remote_codes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0cfd7109-ff47-4ca0-b6d1-b180b65c33d8/61295638302.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3709b490-a8d9-4fa4-8df8-12735d7f6ba9/bopegalixanadidusafasixa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8407439b-9dd1-4833-a6e7-140b46ee979b/discovering_computers_2017_shelly_cashman.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7296bb27-efcc-4eda-904d-db435919fcd6/investigacion_cualitativa_segun_autores_2014.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_off0000c7a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7A3 4960 bytes
SHA-256: e2cda06842646079b579595a0413d7b09da58b9472a100cf922a63c5a61c735e
font_01_sfnt_off0000d895.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD895 10472 bytes
SHA-256: f3f7e773b69381dd493fe33b94bac21c0da97aa779eddae00682203cd7b8ac8c

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