Malicious PDF — malware analysis report

Static analysis result for SHA-256 abd291ad6201387e…

MALICIOUS

PDF

75.4 KB Created: 2021-03-29 05:06:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: d946afe7a4ffeafdd5e02a804da6cb2e SHA-1: 11740c4aebc7cda4e58b1c7fddd5c8749d2d3c09 SHA-256: abd291ad6201387e20983041b44ed6731caa1befd11be92ba16281135732327e
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

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 0.9997

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://baarspo.ru/wix?keyword=conveyor+guide+rail+systems PDF link annotation
    • http://samokex.sportsontheweb.net/free_online_document_language_translation.pdfIn PDF document text
    • http://8gusevshop.space/ratirahasya_kannada_moviek5alf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369651/normal_5feaf00963429.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445128/normal_6046da0e27f0c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4483586/normal_5fcc48e5019ea.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375209/normal_6047411f57929.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419193/normal_603403e6a1231.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390068/normal_5fd64d9210a7c.pdfIn PDF document text
    • http://changepass.online/ukulele_strumming_patterns_4_4d4fg6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374532/normal_6002722983954.pdfIn PDF document text
    • http://mnogoturov.com/9789301244w9r3o.pdfIn PDF document text
    • http://lugabev.mygamesonline.org/python_programming_challenges_for_beginners.pdfIn PDF document text
    • http://glawerry.online/jefuwipipabusizobakn7cff.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/xijilesuzuxo/34108787040.pdfIn PDF document text
    • https://s3.amazonaws.com/bopuxosavubare/guide_to_using_convective_weather_maps.pdfIn PDF document text
    • https://da99f664-88c7-4a27-98aa-0bbcec2e8f57.filesusr.com/ugd/66f3f9_04cf9e6a80b24b6183d3153796f21dcb.pdf?index=trueIn PDF document text
    • https://200c4c3d-185b-4246-b99f-f40cd7065c99.filesusr.com/ugd/3ed902_c1647318070146f99e6be1bbc40cb025.pdf?index=trueIn PDF document text
    • http://gozuketitara.onlinewebshop.net/bose_qc35_manual.pdfIn PDF document text
    • https://c809e8a6-5bdf-489d-8d8c-df4e4638a115.filesusr.com/ugd/45a296_cfef7a0cc82d43b6bcfb459fcf8d81a7.pdf?index=trueIn PDF document text
    • https://9f5bcc56-a059-4f00-ae85-604acd6a3d2d.filesusr.com/ugd/ac9354_6324950ad1294c339c8f28fc2f282ff2.pdf?index=trueIn PDF document text
    • https://50bf384a-eeac-4f26-a262-e2ba1a5e00ba.filesusr.com/ugd/17159d_acb34de6f7e74215a395b8f24281dc6b.pdf?index=trueIn 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_off0000e9f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9F4 5212 bytes
SHA-256: 0215db15b2750f89bffa2aaa899ce16fa8cff995a37f69b47bd6ae374b9a4db8
font_01_sfnt_off0000fba7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBA7 10264 bytes
SHA-256: d7acb7f11fe41f99a85497348d65155cb2cf583163b53cb251db450dec61b6d5

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