Malicious PDF — malware analysis report

Static analysis result for SHA-256 494dde2de29080de…

MALICIOUS

PDF

47.9 KB Created: 2020-10-16 23:11:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: e038472e49c58e66c351e3358782e5de SHA-1: b475b69f242c10b4e6d90dc5061c1e316d59ddf2 SHA-256: 494dde2de29080dee63130723730b0644aaeae158b6c9e623ec1fa092b978738
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, many of which point to a link farm designed to host other PDFs. One of the primary links, https://ggtraff.ru/123?keyword=latin+words+and+meanings+pdf, is identified as a malicious redirector. The document's content and structure suggest it is part of a campaign to drive traffic to malicious infrastructure, 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://ggtraff.ru/123?keyword=latin+words+and+meanings+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4373757/normal_5f893e62a626b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372985/normal_5f897886ceab6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368953/normal_5f87d339949af.pdfIn PDF document text
    • https://pepotoxuxomupav.weebly.com/uploads/1/3/1/4/131483830/7873197.pdfIn PDF document text
    • https://xisubuto.weebly.com/uploads/1/3/1/3/131380177/kikebekulanob.pdfIn PDF document text
    • https://mepetimis.weebly.com/uploads/1/3/1/4/131483418/a22d7.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/bfdbdf05-e390-46c1-b3bd-63f15211e768/xedudodiduxodex.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ca25473a-179d-4de8-acf7-e300abb360a9/woxixalaxobakosuxilen.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f66cbd0f-5cff-469c-8c65-9e0744109e73/wejetebajiwugozatu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d0a6fcc2-941b-412d-86bf-38b5770a82ff/9954971775.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/de12ae23-c032-4c20-abdc-f2271cef568f/favabinuke.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/602afc49-8247-4d57-b47c-82919d7ea147/zefosajolitigiwob.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1da93623-9c3b-4333-96a1-c28f9addf149/9141178850.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/702dfe4e-dfb5-42e9-8743-94dfa271fa28/82795727466.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/0667/1026/files/24841800482.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/4745/1286/files/74170291093.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2492/3298/files/75169889625.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/3241/8725/files/windows_10_1903_manually_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/8126/7876/files/1062926617.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8699/5863/files/45216971441.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007cf0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CF0 5360 bytes
SHA-256: 0736fb7048709c2faffdf2f018d8d1a390c48aaf7d788ab31abf1c816f6387e8
font_01_sfnt_off00008f32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F32 10352 bytes
SHA-256: 17d92b32e50b979b163fb6e78d4a42133c6daf2716b6c6caebdeb543152ae843

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