Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6c208d75128ba0d…

MALICIOUS

PDF

90.8 KB Created: 2020-11-01 22:17:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 176099d5d2bdf4fcd50877b338c105f2 SHA-1: d5593eecf312979bd57849903287991801bb1c2c SHA-256: e6c208d75128ba0d12b329e136fdd90fc0334540731c724877149373569647b8
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

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.ru/123?keyword=po+had+scooter+teletubbies In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366993/normal_5f93a67e3546e.pdfIn PDF document text
    • https://kulojimafad.weebly.com/uploads/1/3/4/5/134518235/2414895.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407087/normal_5f9e13e678635.pdfIn PDF document text
    • https://mojenosude.weebly.com/uploads/1/3/1/3/131382274/nolukida-wewiwasuf-kebori-dejev.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8783/2256/files/tijudarapadovamis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/3830/7994/files/lucky_patcher_official_apk_7.2.1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8927/4046/files/woxuladafagiwivojimewim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/4257/6805/files/if_the_hardy-weinberg_conditions_are_met_what_is_the_net_effect.pdfIn PDF document text
    • https://s3.amazonaws.com/lopazura/clash_of_clans_download_hack_2018.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/2938/3326/files/what_is_the_domain_and_range_of_the_quadratic_parent_function.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/8801/0143/files/landuse_and_landcover.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0700/9180/files/unique_triangles_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/8615/8253/files/wenidegewu.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 1

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

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_008_off00012f77.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x12F77 26232 bytes
SHA-256: f004a3f560aea63a242e1d9803ad55eb8c58b59ff33393addf868b5831693499
font_00_sfnt_off0000e466.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE466 2980 bytes
SHA-256: b35b7cc5be31ce356619feca6e5634610fe0fe704364e31b53a0526dd31b97e3
font_01_sfnt_off0000ef16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF16 5168 bytes
SHA-256: 490364d8b10bb9f1426d85693aa7b60b8b7c559f05908e523e0300e4f1058909
font_02_sfnt_off0001009a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1009A 14536 bytes
SHA-256: a64aff5b8a218f371d9af379ad9257842dd7b572d30edf9f91aaf30b1251e399

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