Malicious PDF — malware analysis report

Static analysis result for SHA-256 cdd49edd967edcae…

MALICIOUS

PDF

117.8 KB Created: 2021-04-02 19:17:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 1f89546d43f3706a884d3a760cf9c270 SHA-1: bca1aa69ee3f435bb4891fff48c7a0745b52905d SHA-256: cdd49edd967edcae7a0b316f2e5683776e3cc51f9e02274dc2a1914132d65282
194 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was identified as malicious by ClamAV and an ML classifier, indicating a phishing or trojan-like behavior. It contains a large number of external links, many pointing to disposable hosting, suggesting a link farm or SEO manipulation tactic. One of the embedded URLs, 'https://bologen.ru/123?utm_term=android+tv+box+t95x', is flagged as unknown reputation, potentially serving as a distribution point for further malicious content or phishing attempts.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9891

Heuristics 7

  • 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.
  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://bologen.ru/123?utm_term=android+tv+box+t95x PDF link annotation
    • https://cdn.sqhk.co/kadukugobug/ghhihhs/61979650143.pdfIn PDF document text
    • https://cdn.sqhk.co/kigimole/fFij2jj/33052350022.pdfIn PDF document text
    • https://cdn.sqhk.co/binuwaxe/bocli4n/25909294235.pdfIn PDF document text
    • https://cdn.sqhk.co/rurufimibiwe/j6ihDgi/all_social_networks_app_download.pdfIn PDF document text
    • http://afracheat5.xyz/epson_wf-7510_wireless_setupw8e0c.pdfIn PDF document text
    • https://cdn.sqhk.co/kataduzoni/he1jcSr/comptia_network_certification_exam_guide.pdfIn PDF document text
    • http://weinmvc.net/55391541616aklop.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449604/normal_60218dcb3abd8.pdfIn PDF document text
    • http://idem-peshkom.ru/what_is_a_normative_question_in_economicsvlpoh.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374362/normal_60223e50ad05a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://3d6da986-5be3-4955-9d5c-e891e6c56a45.filesusr.com/ugd/3c671a_09f4e9a21c5c443ea41cde5e5b034321.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/9bac27d8-4c03-4eac-97d3-14e50c91c95c/boy_scout_handbook_10th_edition.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5bde01db-8270-4695-842b-95f5af0faf06/3099645133.pdfIn PDF document text
    • https://ed59cdd8-0d75-4634-8bb2-7afdb9da103e.filesusr.com/ugd/9cb112_d6bb1f724aca49f1bd15d41433d7a4e1.pdf?index=trueIn PDF document text
    • https://6b9ff03a-ef48-417a-a14c-919df0f903d0.filesusr.com/ugd/f459ea_774aac5cb778423b8b8991fc66503354.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/6069776f-3e85-443d-901c-1e341c8b3c84/doubledown_casino_facebook_app.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/67e2c182-87e6-4fbf-a204-9b5bf5e7f812/the_painted_bird_netflix.pdfIn PDF document text
    • https://ff536187-e25a-4bd2-965b-ff1113cf40b0.filesusr.com/ugd/bfcccc_2cb9746aec9c47a1b7131e926cdc63a1.pdf?index=trueIn PDF document text
    • https://02687da8-bf2b-436b-a8ca-82c6e04513a5.filesusr.com/ugd/e48f8a_cd46a79a1958490eab5b765145a08013.pdf?index=trueIn PDF document text
    • https://9f9bd9fa-00fe-4673-b34e-9a629881f524.filesusr.com/ugd/09273f_87e5c6257a9041a4a38d63294784b6a1.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00014c8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14C8D 3092 bytes
SHA-256: 11429c00279ac343c67cd5eba4568ff391f742039c4d4a77fb27a5770384cc22
font_01_sfnt_off00015788.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15788 4608 bytes
SHA-256: 2cfec2c035732dfc788a8fb1d55327f2f34b767fb09030a699c5b52a8083f4b5
font_02_sfnt_off00016737.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16737 2140 bytes
SHA-256: 289854c0292170102eeea8cd8d9fa039b7e5adf06f71653ea533c14c4e2d2c34
font_03_sfnt_off00017112.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17112 16032 bytes
SHA-256: bdc8012776b3b5153060481fca4591e09136dcc1bce8a4b743d2b23ff40d4288
font_04_sfnt_off0001a3cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A3CC 16520 bytes
SHA-256: 6f14dca399f33a58cc81c16ed39ebee40939f2668fd36966b42904fc739c022d
font_05_sfnt_off0001b9ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B9EF 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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