Malicious PDF — malware analysis report

Static analysis result for SHA-256 e476ce8961c82198…

MALICIOUS

PDF

43.3 KB Created: 2020-11-04 20:58:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 035bf2daf0df4efc1bc673c9bb55ab88 SHA-1: 7a8f76d07d3a576d3da63688bb92464b4b2a4ce3 SHA-256: e476ce8961c821980274cfd3dcce487a8879066fe2e72b128ddb94344624fd48
154 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to known malicious redirectors or are part of a link farm designed to manipulate search engine results. The document body, though obfuscated, contains a URL that is also flagged as a malicious redirector. This suggests the primary purpose is to redirect users to malicious sites, likely for phishing or malware distribution.

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://gettraff.ru/strik?keyword=qa+manual+tester+resume+sample
    • https://gepinizidewepi.weebly.com/uploads/1/3/4/3/134305752/d1bca.pdf
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/belapigojat.pdf
    • https://cdn-cms.f-static.net/uploads/4420748/normal_5fa16ce8f1276.pdf
    • https://cdn-cms.f-static.net/uploads/4383314/normal_5f96a010bb391.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/f1f1b111-6b89-47ac-9be0-7e33b5378ef5/dafenabizix.pdf
    • https://uploads.strikinglycdn.com/files/6e3bf1da-6c4c-4133-8d11-f3d1ecaa55e6/kingdom_hearts_1.5_2.5_trophy_guide.pdf
    • https://uploads.strikinglycdn.com/files/847693d4-5498-4a47-8750-4b9b399325b1/nea_marin_miliardar_film.pdf
    • https://uploads.strikinglycdn.com/files/c5aafb0c-3096-4041-a28f-219c17c69f07/78263206542.pdf
    • https://uploads.strikinglycdn.com/files/1105ec1a-40cc-4e44-97d8-1bb815e22f4a/44000579065.pdf
    • https://uploads.strikinglycdn.com/files/f8463b00-a571-4507-b38f-fa6763a1359d/fomaxodox.pdf
    • https://uploads.strikinglycdn.com/files/b2e9cebf-700f-4cb6-bb8e-4648c685911c/princes_of_the_apocalypse_5e_download.pdf
    • https://uploads.strikinglycdn.com/files/5d149ff2-fcaf-4625-9a9f-5d7f02ea7333/45834810848.pdf
    • https://uploads.strikinglycdn.com/files/8ddba6d7-ff4f-4946-b5f2-d7440d40250a/4348730155.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006aea.bin
c8d196d423f116c7b31ae39da2f4921a1911105924310b987b44f79c0a8e4b21
pdf-font-stream PDF embedded font (sfnt) at offset 0x6AEA 5028 bytes
font_01_sfnt_off00007be3.bin
4e03ba9b3daba162ec44b90e50ea9a6f6c59280bbf3fbe24d401db6271d81f6f
pdf-font-stream PDF embedded font (sfnt) at offset 0x7BE3 10720 bytes