Malicious PDF — malware analysis report

Static analysis result for SHA-256 70890a0be1e1c233…

MALICIOUS

PDF

44.8 KB Created: 2020-10-29 12:16:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3763f9786dc2c10fb086b29e16ccf04b SHA-1: 77ed31a3aae7ae7fce3300707e44d48235859b80 SHA-256: 70890a0be1e1c23386a8469453b7b7efc840fc903085cd27decafed4db21549a
154 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for linking to known malicious redirector infrastructure, specifically pointing to 'ggtraff.ru'. The document body, though heavily obfuscated, contains a URL that matches this malicious domain. This suggests the PDF is designed to redirect users to a potentially harmful website, likely for phishing or malware delivery.

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/strik?keyword=colageina+10+walmart
    • https://cdn-cms.f-static.net/uploads/4367941/normal_5f89242f14c75.pdf
    • https://cdn-cms.f-static.net/uploads/4369765/normal_5f8ccecf278fe.pdf
    • https://repugonajipivup.weebly.com/uploads/1/3/0/8/130814926/3688228.pdf
    • https://cdn-cms.f-static.net/uploads/4366384/normal_5f922901d3fdf.pdf
    • https://waniremupamed.weebly.com/uploads/1/3/1/4/131407535/xerenanazegix.pdf
    • https://zosupexaduj.weebly.com/uploads/1/3/0/7/130738593/rudixeja.pdf
    • https://cdn-cms.f-static.net/uploads/4367964/normal_5f87646ea00a9.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0429/3971/1644/files/21407817572.pdf
    • https://cdn.shopify.com/s/files/1/0478/7398/2630/files/72970497839.pdf
    • https://uploads.strikinglycdn.com/files/a907ecd5-7b46-4d7b-a5ec-915dde22ad23/rilovin.pdf
    • https://uploads.strikinglycdn.com/files/f3be40aa-5380-439b-9abd-4298e6ac827e/0_dark_30_full_movie_online.pdf
    • https://cdn.shopify.com/s/files/1/0496/7707/4588/files/tugenoderixujodawo.pdf
    • https://cdn.shopify.com/s/files/1/0482/9616/5534/files/81840406295.pdf
    • https://uploads.strikinglycdn.com/files/c56d5d78-7078-432d-a71e-4f9aa7b8608c/96692080673.pdf
    • https://uploads.strikinglycdn.com/files/aa4865be-5004-4034-92b9-05b8d44ffc6e/totimemajoni.pdf
    • https://uploads.strikinglycdn.com/files/8fb18da8-427f-40c1-8e3f-9eb94b47fc0c/28678032512.pdf
    • https://uploads.strikinglycdn.com/files/36319505-4d91-445d-9640-f3aaafe88d2a/medosukomefe.pdf
    • https://uploads.strikinglycdn.com/files/c9ac6017-ee33-4766-9265-62f7c2b89b09/24114181150.pdf
    • https://uploads.strikinglycdn.com/files/cfe4ccd5-483e-4d07-a369-3a846c04fff3/bomifax.pdf
    • https://uploads.strikinglycdn.com/files/65473307-5e64-476c-9338-563aa87e38b6/hunter_the_reckoning_core_rulebook_download.pdf
    • https://uploads.strikinglycdn.com/files/a0c47dd1-e594-4f6a-bfac-c76a2de153fa/dizodaxavisatusalaw.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_off00006e74.bin
56dc7017b3b04b5d5cca97da1f581484d0ba04a033a7d95d8acbef7791906f01		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E74 5016 bytes
font_01_sfnt_off00007f82.bin
b87d970a98c8edcd7f8342f2d1a974d8513467825a64e11fac638eb669380738		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F82 11620 bytes

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