Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd6b2061f7a5a2a2…

MALICIOUS

PDF

68.4 KB Created: 2021-06-13 17:57:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: c1594e8451839ba2b8911650b1cc99fe SHA-1: 11aa16485c3aa027255fe78574125d97c914dcc9 SHA-256: fd6b2061f7a5a2a281fac828ff7631a36fa77c4fb64f9551fa2ceb590139ef60
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URL pointing to 'ketchas.ru', which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, contains text that appears to be a lure related to a movie title, reinforcing the phishing pretext.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://ketchas.ru/pbw?utm_term=sadhi+maa+jarur+aana+full+movie PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4445737/normal_6021f17ab309f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446280/normal_5fdebcc6657a7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479707/normal_603324fd296ef.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391308/normal_601da38640c1c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379049/normal_600123a38b27b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487399/normal_60c42d93a9699.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478688/normal_601392ec02418.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421623/normal_601672240e409.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370068/normal_5ffbceeeb1f25.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380403/normal_5fe789cd7b615.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474169/normal_605c0ceaca6b9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388421/normal_60336f7041fb3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444644/normal_601f23aae72b1.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4454168/normal_60b46c28e4265.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462056/normal_60171ea5e29af.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446638/normal_603bf61868d9c.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/12a96890-cc38-4870-beae-0f1cb1585b00/have_waec_result_2020_been_released.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dac2cd4f-cab1-4e88-86b2-4253db909d9d/97766928128.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a1d54c78-fc9e-4de6-8ec4-e19877df71b2/221574919.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/57fee6c9-3c2e-47c7-8d2f-492911206447/kikewukuxaxotadokur.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/76ad5279-9213-42d2-933d-289da198642b/how_much_is_a_battery_for_a_2010_toyota_corolla.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/11a65b16-1db6-4786-94fc-ecb2a4a537aa/zuvasixudelep.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/572d6f28-c1ee-432c-8746-3568c8e6804d/70132330006.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7d1acb68-c039-4379-b062-cf249468c439/the_art_of_using_language_to_communicate_effectively_is_called.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_off0000d0a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0A4 5208 bytes
SHA-256: 5cd00d10e25c328cbe41bae8315943315ea1830be379d4e34576eaa144f5c7c9
font_01_sfnt_off0000e235.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE235 9876 bytes
SHA-256: fe8354597d1a50f342c7a05c2fcd880b3f2fc25f937cdfc489e9dedc0d24b762

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