Malicious PDF — malware analysis report

Static analysis result for SHA-256 03aa206d2f127db2…

MALICIOUS

PDF

43.2 KB Created: 2020-10-27 07:26:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: d1a037713510abac0a5c2deb52161f78 SHA-1: 9d1f3805c5f092e536b9f782462973bac8e9daa5 SHA-256: 03aa206d2f127db21c2bf053a01b11a08be3e17af48bcb04086b87691b52c7c9
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains embedded links that lead to a redirector URL, indicating a phishing or malicious content delivery attempt. The ML classifier strongly flagged this PDF as malicious, and the presence of a link farm suggests an effort to manipulate search engine results or distribute malicious content. The document body, though partially corrupted, contains text related to donations and a URL that aligns with the malicious redirector.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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.
  • 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://ttraff.club/123?keyword=cat+adoption+team+donations In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366312/normal_5f87309ec39e4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411250/normal_5f9743cb238cd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369174/normal_5f8f91801b57d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370299/normal_5f900d3383751.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368742/normal_5f8d0395019e4.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/f017114d-d57c-4d3c-a01f-b79a39ab6c23/durame.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/82c9e62b-f217-48c0-8922-b08976cd8007/tutof.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/35e94876-0923-4ab3-af64-c5537e5a0d86/zujiginimibasunejovatur.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6376958d-f2a2-483f-8717-293145e8a8be/fallout_4_sims_settlement_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a1cebc77-8b3c-46af-9244-d4e3c996237d/muzibitomorosem.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/709a6d0c-e22d-4429-b961-9525b8f9e2e7/virafedok.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c833bd3d-1ca9-4737-816c-6e1d0cfcdd1c/wawax.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f135018c-43e1-4a0f-93a8-c558b96f66fc/98187004445.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/1792/7359/files/android_studio_tutorial_for_beginners.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/0613/8787/files/7863223676.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8081/9894/files/xabujuxamewumamituxer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/9038/1473/files/86478453830.pdfIn PDF document text
    • https://s3.amazonaws.com/tadovu/63704247014.pdfIn PDF document text
    • https://s3.amazonaws.com/mizeteb/laporan_pendahuluan_hernia_umbilikalis.pdfIn PDF document text
    • https://s3.amazonaws.com/lebaxa/cassation_decision_volume_5.pdfIn PDF document text
    • https://s3.amazonaws.com/belopudevuzuza/fevivamikevetaxajejuvu.pdfIn PDF document text
    • https://s3.amazonaws.com/rebomedug/88973579309.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/9931/5104/files/atomic_theory_1.2_isotopes_and_average_atomic_mass_worksheet_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2613/7756/files/fotevuweje.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_off000069b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69B5 4884 bytes
SHA-256: 5fae437694315284fd52fbb558ac3e6428ff01faa72b305c470152a60e9168be
font_01_sfnt_off00007a37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A37 11156 bytes
SHA-256: 334accbed18bfd023268ae3cf1bd5bbc82e367b823d0fc3a96eb78d67a9e0188

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