Malicious PDF — malware analysis report

Static analysis result for SHA-256 989320989230c154…

MALICIOUS

PDF

80.5 KB Created: 2021-05-22 22:22:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: fcc9704e1f225d5f9fa9f11c4ec65e7a SHA-1: 5b43870483d3fcec4877d95e38cd2e8726b1855a SHA-256: 989320989230c1542d72b507269af67c6a2a6e551c80ea1e7ba12a060686f771
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

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://zajinet.ru/strik?utm_term=le+rouge+et+le+noir+opera+rock+%25D1%2581%25D0%25BA%25D0%25B0%25D1%2587%25D0%25B0%25D1%2582%25D1%258C PDF link annotation
    • https://xiforamuti.weebly.com/uploads/1/3/4/6/134611992/6573152.pdfIn PDF document text
    • https://sifejolo.weebly.com/uploads/1/3/1/4/131410009/kazadoruxu-vegis-wiwuroniz-vadijiwetido.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/jewizopukuni/24602293414.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxenipup/owners_manual_ge_dishwasher.pdfIn PDF document text
    • https://s3.amazonaws.com/bogeguva/doduwavugilogi.pdfIn PDF document text
    • https://s3.amazonaws.com/bulozor/adobe_reader.pdfIn PDF document text
    • https://s3.amazonaws.com/pafexegud/cyberghost_7_full.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aa96a092-6c69-43c0-b20b-794b356d1583/bugegopitalareti.pdfIn PDF document text
    • https://s3.amazonaws.com/tutapaxi/best_cv_template_2019_uk.pdfIn PDF document text
    • https://s3.amazonaws.com/wixanarer/95452185437.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9a2d3c3b-93b1-4310-b232-869e87ad644f/modern_calligraphy_kit_for_beginners.pdfIn PDF document text
    • https://s3.amazonaws.com/fapaga/somusotafasimomejise.pdfIn PDF document text
    • https://s3.amazonaws.com/donarepemi/38461446823.pdfIn PDF document text
    • https://s3.amazonaws.com/vefagotoje/78089991301.pdfIn PDF document text
    • https://s3.amazonaws.com/nademopor/2015_subaru_outback_limited_owners_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8594c94c-e60c-4a04-817f-e92b452b8f33/pukamozufepakibewa.pdfIn PDF document text
    • https://s3.amazonaws.com/pidufozu/79930001884.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5fc5e8e6-c60a-4ce7-ab1f-cbb689e67e54/descargar_cne_lista_tascon_gratis.pdfIn PDF document text
    • https://s3.amazonaws.com/wajibile/black_hawk_down_soundtrack_list.pdfIn PDF document text
    • https://s3.amazonaws.com/vebisop/another_word_for_sensory.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 6

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e1c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1C5 5556 bytes
SHA-256: 3740ae53d0cf1f78d1e2791c8a3abe65c7496c0b48beba7fa1023d29f30fb8b8
font_01_sfnt_off0000f3ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3EF 11360 bytes
SHA-256: e05010bc29f398a79306f9a388136ff8bb2e894e8e36b1df9cd6c3fc8b574590
font_02_sfnt_off00011b0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11B0D 17100 bytes
SHA-256: 6086aeaa363b8fa77a80c9ff9db7ad0c6601cfb9fcc08e60b629e5ae2e276b26

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