Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e2226eb10ff793d…

MALICIOUS

PDF

96.6 KB Created: 2021-03-23 06:29:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 3077651bb5cb739ce9836e2a7508badf SHA-1: 3db96aaf0942030c73361800c58a973fd398d5a7 SHA-256: 8e2226eb10ff793d5a1ab6d129dc9089f598262b148a06ad7580e20711797e0a
134 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or malware distribution attempt. It functions as a link farm, containing numerous external URLs that likely lead to malicious content or further infection stages. The presence of a visual download button suggests a lure to trick users into clicking these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://botokaw.ru/wix?keyword=mind+over+mood+worksheets+pdf PDF link annotation
    • http://zikewexer.scienceontheweb.net/fulimodefejaz.pdfIn PDF document text
    • http://ranking-se.com/what_is_digital_media_simple_definitionzvlqg.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451754/normal_60464d243e841.pdfIn PDF document text
    • http://winoraama.site/904796289788m90.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427781/normal_5fe6b98595dab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372967/normal_600aa348e971a.pdfIn PDF document text
    • http://kavelokafozi.medianewsonline.com/biodata_format_for_marriage_tamil_free_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382408/normal_5fe275fe853fc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496372/normal_600d067d6ad92.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/e2b0ee3a-21de-4a93-81b2-47d0b0214494/54577578731.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/80297d35-fef7-4da6-a873-7bd549a5cd9f/kubusuwexumobufoxavuj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/34ca0fa0-b448-4767-b3f2-1bec934e49a1/todesuxitorinu.pdfIn PDF document text
    • https://7722bba5-72ad-4d15-a72d-9ce9fbdcf1b5.filesusr.com/ugd/772ad5_3a62bdb3a7754e99ac3f1db442019094.pdf?index=trueIn PDF document text
    • https://0efdb04f-128a-4c0d-ace4-8b312723ebcc.filesusr.com/ugd/5508f4_36b88eef881b45eab3dc37f3b33a3d46.pdf?index=trueIn PDF document text
    • https://3cd6846c-369c-4875-9c63-132df726a2dd.filesusr.com/ugd/7ab50f_24901ee09e8e4886a02884581468353c.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/84574eb8-3c02-418b-acc9-03288bdec091/zidevineb.pdfIn PDF document text
    • https://ec08fec6-e576-400d-8504-372613838d3c.filesusr.com/ugd/57e0ce_2ae77f000e6840ff8a149788542cad72.pdf?index=trueIn PDF document text
    • https://b5d51143-f34a-4a4f-9265-6917490cb775.filesusr.com/ugd/9f69bd_0b9654bd6dbe439eb3a1cd33fe1020da.pdf?index=trueIn PDF document text
    • https://a0a5ada1-270c-452f-b092-d943fc6f0dc0.filesusr.com/ugd/306762_7c7977c009384b0ca9ef97beda5df6a8.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_off00013e26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13E26 5260 bytes
SHA-256: 981d8bf2642e29ffb7c4121f8ae9723147b77d5bd8c10d00e8f8b2e67fc0bc46
font_01_sfnt_off00015005.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15005 10960 bytes
SHA-256: 2313e12aa0be5ccf289cf128316eb437a5035eaff87b7090700183cb952b92d8

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