Malicious PDF — malware analysis report

Static analysis result for SHA-256 630c009f032f06b7…

MALICIOUS

PDF

67.4 KB Created: 2021-06-13 18:27:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 70833c8160671d5032509d2e4d66663f SHA-1: 66dc5e9bceffcbbfbd52d377c6556abd7eade5e9 SHA-256: 630c009f032f06b72a3962d65b3520eadee953e08ad99891b75a26e887301558
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF document contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or phishing attempt. The ClamAV detection and ML classifier also indicate maliciousness. The embedded URLs are likely used to redirect users to malicious sites or download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://queure.ru/pbw?utm_term=sword+of+vengeance+d%2526d PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4393625/normal_5fcef603c573b.pdfIn PDF document text
    • https://galatowev.weebly.com/uploads/1/3/4/3/134325578/darumarom.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4491414/normal_5ff2bb742ffbc.pdfIn PDF document text
    • https://bifagawu.weebly.com/uploads/1/3/7/5/137512270/6103242.pdfIn PDF document text
    • https://tagorawijetix.weebly.com/uploads/1/3/5/3/135392874/7410450.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391327/normal_604a4e1ade484.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4477387/normal_5ffdb9404bf14.pdfIn PDF document text
    • https://widawukilifuduz.weebly.com/uploads/1/3/5/3/135398171/zimomo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446772/normal_605326bc3d334.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423750/normal_606769042eff3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366395/normal_602daf3db6624.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/7f32d8b5-41d3-4286-a93c-b9f536237dba/95352125706.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e139ba74-2a4b-451d-b891-c13d0a14d536/96450536001.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b698205d-3099-49ff-b142-ad4a53960868/power_book_ii_ghost_episode_10.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4b8ef351-051e-4f02-a652-b6f6a5bdce39/vujomaro.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/87621dbd-eae5-4a55-94ec-25b8fa0102bd/kebaxedisala.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a5462bc-6859-4f32-89dd-04bd283503fd/12233348087.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a304aee-1829-4b9f-876e-578c674e3ef9/movaw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c1d66ba9-3fac-4fb2-afdd-6978760203ca/lilaruk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/265beb8b-3d62-4f8a-af3c-25ff684a596b/vivitar_infinite_bluetooth_speaker_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b51eb50a-4ce5-4d47-8d06-c8c95b493048/bebivotozunuzizokawigejas.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/20e78a31-7146-49c7-a3e1-13850047274a/sql_fundamentals_2.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cbe6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBE6 5236 bytes
SHA-256: 3d3c6cc3d27639daf82bea139b90d1aba2c543eb28c681f51f00a99bb46f4f03
font_01_sfnt_off0000ddde.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDDE 9908 bytes
SHA-256: df9c180068ae300d473bf2d6d22051d03b7e0cbf8c7138ebf4e91e89e705b049

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