Malicious PDF — malware analysis report

Static analysis result for SHA-256 08c66904c6476dcd…

MALICIOUS

PDF

72.4 KB Created: 2020-10-29 23:45:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 6f962883e66a1a94bf9c345c7a07fc70 SHA-1: 14e57c6b3f1f8cf8ce150960fdb534ebf45481d1 SHA-256: 08c66904c6476dcd432871769a71178db2996121ba0ed7fa03c7af945793def5
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.club/123?keyword=gardenscapes+hack+without+human+verification+2018 In PDF document text
    • https://cdn-cms.f-static.net/uploads/4368772/normal_5f91ea98d4a81.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/25125bd8-32aa-43df-8c77-7a5d06742c71/sosibebodewenu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/828c40e6-102d-45ae-8381-388c489ada69/9958962398.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8605b16d-0855-4c23-ad70-dc876accf834/all_amendments_indian_constitution.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/079d7eb7-76e7-4a7e-9a72-87108c5cc09a/benefits_of_dual_gigabit_ethernet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/306ab43a-4362-434d-8768-49f25f1beaab/79818939615.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f29ca32a-4f05-4e9b-972b-d64df08022ac/65938201296.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c3179a8a-6e49-4694-877a-f587db9aaa15/mubegugaduwifap.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2749a9c8-dbc0-406e-ac8f-e5a959902d7e/linear_algebra_and_its_applications_4th_edition_free_download_solution.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e591c301-c1b3-4759-9a42-45d0bb335e75/73344792212.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9f0797cd-034d-4145-88ad-b337728e40f3/66461983010.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/3649/3992/files/lv_diastolic_dysfunction_guidelines.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3f2a419f-d436-4ee2-a75e-dcb6777df885/40016577129.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8e3df11d-c9ff-49d9-aa8c-b8c98fc65f2a/fegepi.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

Related samples 8

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
font_00_sfnt_off0000c48d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC48D 3136 bytes
SHA-256: 6487091c0070741e646db4a1cda49bb5dd8928231115cd9838b724a369c8679e
font_01_sfnt_off0000cfb8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFB8 6132 bytes
SHA-256: c4f1fb5f15b6f6f9e9290d66653babf705cd82bf0ab05779632bec5e22fe5a00
font_02_sfnt_off0000e488.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE488 2140 bytes
SHA-256: 3eadf3ff1ae85f7a2dd8be852d633ca148c1d24200a16cbd4325889adc5789c4
font_03_sfnt_off0000ee62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE62 10712 bytes
SHA-256: 444c358878c8a9f79efb2efb10631d1d69504ce60924105f03fe20412eb860fd

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