Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e6da0b253a9b03c…

MALICIOUS

PDF

40.0 KB Created: 2020-09-17 08:51:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0de38cd9ea582a9de896a9d94f8fa43e SHA-1: 5492e7649fa7eaeb760c6adca8d11f4bd6bb97ce SHA-256: 6e6da0b253a9b03c9e54eb8c23fde72bfe842715d5b83eba8792834f132096c0
154 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, forming a link farm designed to direct users to external content. One of these links, https://ttraff.club/wix?keyword=trend+honing+guide+review, is identified as a malicious redirector. The document's structure and the presence of a malicious redirector suggest it is part of a phishing or scam campaign, likely intended to lead users to malicious websites.

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=trend+honing+guide+review
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://c9cbcd85-9ebb-49fa-ba60-40fc17ebb32a.filesusr.com/ugd/a37a2e_e37b2138c9ae4a339a1bd4bcc479a2a8.pdf?index=true
    • https://6037980f-cc51-4852-86cc-24c571eedda9.filesusr.com/ugd/501a20_893b3ab74b5145fd9ca672b942e9342f.pdf?index=true
    • https://d771dc81-b545-411c-9df6-30e1ebcd8cb6.filesusr.com/ugd/29c71c_34a43944680f4068840f32c23b097b47.pdf?index=true
    • https://df680f10-b31a-40b8-bcf3-58ca6b354d13.filesusr.com/ugd/cbe7f7_274739aab7b14d63875bd27f7ac6e33c.pdf?index=true
    • https://f9a5fe61-a548-4cb8-8712-df35ba8e8f1d.filesusr.com/ugd/143c98_f86fbf36870a4da59f66a68c9ef36575.pdf?index=true
    • https://b3f2b617-4bb6-4534-a4c2-9bfbe4118935.filesusr.com/ugd/1e52da_b6c6520e3f034e12b1191216bfb7a646.pdf?index=true
    • https://f4dd203f-8e41-4e95-98a0-d76cfe617c2e.filesusr.com/ugd/544e7e_a88bafd7bbe54b58849e073618db85a1.pdf?index=true
    • https://89411c80-8fb6-4e9e-9eaf-39bfe7e9bb50.filesusr.com/ugd/314c35_63a4ea4c3b07499c9dc654807256daec.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0460/1230/1479/files/40233145554.pdf
    • https://cdn.shopify.com/s/files/1/0430/1848/5923/files/degrees_of_comparison_worksheet_for_class_3.pdf
    • https://cdn.shopify.com/s/files/1/0437/3898/8709/files/30693969404.pdf
    • https://cdn.shopify.com/s/files/1/0428/0185/6668/files/devi_bhagavatam_malayalam_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/6309/9040/files/abbyy_fine_reader_software.pdf
    • https://cdn.shopify.com/s/files/1/0434/7016/0032/files/fonaged.pdf
    • https://cdn.shopify.com/s/files/1/0463/1334/1090/files/kibedaverabix.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_off00005e51.bin
1e39092871041464bba9eab8067fcd51d63a12e0d63ec307973f5af1a51281aa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E51 4768 bytes
font_01_sfnt_off00006e96.bin
d61ea3b9765d61df962744f38931be679667807216d98d4866db1deb089fe949		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E96 10772 bytes

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