Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab1c2bc1f6a9c79d…

MALICIOUS

PDF

76.1 KB Created: 2021-05-20 05:47:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 0cee1465bbe4c329c1e1e504183a1e0d SHA-1: a95ab6ebe4c64ce6435fdd2a5ee47ef5b207cde9 SHA-256: ab1c2bc1f6a9c79dd7ea2729ea3c2310e0c61060762b079b36f4fe03f05f2bfc
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, with one prominent URL pointing to a suspicious domain that appears to be part of a link farm. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or scamming purposes. Although no scripts were explicitly extracted, the PDF structure and the presence of many external links suggest it is designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://kuzutuzo.ru/strik?utm_term=marvel+extended+universe+movie+order PDF link annotation
    • https://jaxuvoxet.weebly.com/uploads/1/3/5/9/135979876/tovom-seramebu-dinade-panasas.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369330/normal_60624bce27f39.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403406/normal_601f21480b568.pdfIn PDF document text
    • https://sizugive.weebly.com/uploads/1/3/5/9/135993047/1177858.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486353/normal_5ffac630caa86.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388626/normal_5ffd5113c4d7d.pdfIn PDF document text
    • https://gaxiworet.weebly.com/uploads/1/3/1/4/131408942/nukudimuxujetexo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/1453278c-890c-469e-8f11-ce5a2e28beb7/torajagurerijofevo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d44f17d2-f561-40dc-8a4d-73c73ac44e5a/how_to_succeed_in_college_algebra.pdfIn PDF document text
    • https://s3.amazonaws.com/kagedatabujo/xakidiluxumutezomixig.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c69a8b5f-986c-4097-b9a8-8bcd9e7302c5/45795848868.pdfIn PDF document text
    • https://s3.amazonaws.com/dutimajizowa/78625096018.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0e70d1b0-8f24-4bc3-bb5a-460de568aa62/how_long_should_you_train_muay_thai.pdfIn PDF document text
    • https://s3.amazonaws.com/rupatojuko/63169186953.pdfIn PDF document text
    • https://s3.amazonaws.com/mukutud/the_devil_wears_prada_fashion_scene.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1c843881-b1e7-4033-afc2-e994125dd2ff/can_you_cancel_sat_subject_test_scores.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b0b09c5b-4f8f-4267-9677-bbf3dc6dd47f/optiplex_7010_sff_i5-3470.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ad7ed930-aab5-498b-83b3-8595d6ba8fac/algebra_2_common_core_pearson_online_textbook.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2d61e80e-50ee-4b7b-ad5d-23ee8487c2bc/33837804324.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/11ee02d2-c56a-44f3-9864-b6c973e82e7d/crusader_kings_2_best_military_traits.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b5096af-8033-4c9e-a2f3-4abd9ebb079a/kipaxarina.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_off0000eb07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB07 5104 bytes
SHA-256: 3a3d31c152ffcde0c513282b6512da154324bbac7f04f528bc8764ce16ae6220
font_01_sfnt_off0000fc5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC5D 10892 bytes
SHA-256: 63f5b079ce75c903187fffecb2743904267a29e991d7c572f48d84981d630b83

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