Malicious PDF — malware analysis report

Static analysis result for SHA-256 1441ff31c70ed3f2…

MALICIOUS

PDF

39.7 KB Created: 2020-09-16 21:53:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8db67df5d3d5c43edec5e48f5233d914 SHA-1: a85c1dc584020b649cb359f2de70dbca7fcf5572 SHA-256: 1441ff31c70ed3f26b5405199cb60e05457742de772903fb9cd5c4c11139ac7b
154 Risk Score

Malware Insights

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

This PDF document contains a large number of embedded links, masquerading as a link farm for jewelry-related content. One of these links, https://ttraff.club/wix?keyword=miriam+haskell+jewelry+new+york, points to known malicious redirector infrastructure. The document's structure and embedded links suggest an attempt to lure users to malicious sites, likely for further exploitation or phishing.

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/wix?keyword=miriam+haskell+jewelry+new+york
    • http://files.thesetbuilder.org/uploads/1/3/1/3/131378780/getatifani.pdf
    • http://fowobaf.easttexasplacenta.com/uploads/1/3/0/7/130739540/vozoguvuju.pdf
    • http://files.pignbird.com/uploads/1/3/0/7/130776037/rokalenonugewibu.pdf
    • http://jewujab.darkwarlosgames.com/uploads/1/3/1/3/131379021/6842534.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cac8da76-4484-4612-88c5-822f57100764.filesusr.com/ugd/4a2613_572f5e43f17d416faaa5246264011804.pdf?index=true
    • https://f975d4d4-124e-4fec-8028-8a4d9479ed08.filesusr.com/ugd/529dbf_5379ef460b7e4e6fa69c539ea72fd734.pdf?index=true
    • https://3a7df2eb-aa84-4c53-a89c-b70f4867cf0e.filesusr.com/ugd/bb05c1_4d66f509286848fba33f039e802b4fcd.pdf?index=true
    • https://0d801e41-584d-447d-8a86-7231a2f10f95.filesusr.com/ugd/a91264_c455310d8f634fb98a8c85d26b6f11c6.pdf?index=true
    • https://0d5cb1e0-1575-465c-9f5f-86ca7a7f95ee.filesusr.com/ugd/bdc04d_31f88bd3ce3c42f1946520def6e29d73.pdf?index=true
    • https://c1a5011b-fdcd-488f-8656-13ca019c3ac9.filesusr.com/ugd/a13bc2_a182422798654fa0997c5887dfd6886a.pdf?index=true
    • https://61ef9585-d526-462b-9979-158a1114d49d.filesusr.com/ugd/dcf311_d5d832e6683a4d93a599015a12763720.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0431/7046/3912/files/panuzixikom.pdf
    • https://cdn.shopify.com/s/files/1/0431/5113/0785/files/list_of_countries_in_the_world_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/9100/0472/files/60536825037.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_off00005c37.bin
a573f5cdb069259b4677c56f937f19d36a99cf37889de0ca451e4f60f49eb3f4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5C37 5264 bytes
font_01_sfnt_off00006e14.bin
4fa5a4989dc8d427e0955b85513f915e5e3432470e85596fb39ba0ca5fd95214		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E14 10580 bytes

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