Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce2ec49af4b7fd65…

MALICIOUS

PDF

39.4 KB Created: 2020-08-30 21:12:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0fbd4e177dfbf0cc5e8099dd24fb22d0 SHA-1: f84519940db7c9e9dcf96ab4a88e85a26d2e2b5d SHA-256: ce2ec49af4b7fd657e436ee73d73f1b70e8d56edcaa2fc46e54664e20ebc43c3
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

This PDF file contains multiple embedded links, with one pointing to a known malicious redirector at 'https://ttraff.ru/wix?keyword=modern+physique+free+pdf'. The document body, though heavily obfuscated, also contains this URL, suggesting the primary intent is to redirect users to malicious infrastructure. The presence of numerous other links to Shopify-hosted PDFs indicates a potential SEO poisoning or link farm tactic to increase visibility and lure victims.

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.ru/wix?keyword=modern+physique+free+pdf
    • https://cdn.shopify.com/s/files/1/0431/3235/4727/files/53244248132.pdf
    • https://cdn.shopify.com/s/files/1/0428/5415/4406/files/59853573175.pdf
    • https://cdn.shopify.com/s/files/1/0437/2761/8209/files/waxiz.pdf
    • https://cdn.shopify.com/s/files/1/0440/3508/0342/files/58240082941.pdf
    • https://cdn.shopify.com/s/files/1/0427/8714/3839/files/26706221444.pdf
    • https://cdn.shopify.com/s/files/1/0463/0672/1957/files/pekuze.pdf
    • https://cdn.shopify.com/s/files/1/0430/6229/6725/files/12786237709.pdf
    • https://cdn.shopify.com/s/files/1/0429/7680/5018/files/ribefemavaxixete.pdf
    • https://cdn.shopify.com/s/files/1/0438/2294/0320/files/chemistry_bonding_test.pdf
    • https://cdn.shopify.com/s/files/1/0440/4235/4853/files/92385969891.pdf
    • https://cdn.shopify.com/s/files/1/0437/1398/6714/files/jikikekozuneguw.pdf
    • https://cdn.shopify.com/s/files/1/0429/0877/8663/files/azure_table_storage_search_performance.pdf
    • https://cdn.shopify.com/s/files/1/0434/4460/0999/files/organic_chem_lab_survival_manual.pdf
    • https://cdn.shopify.com/s/files/1/0464/5178/5896/files/gobababatasojix.pdf
    • https://cdn.shopify.com/s/files/1/0453/6434/7035/files/contract_of_bailment_and_pledge.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005cbb.bin
856b07790829891f3446b3e5e721274418725a5cb1e6eb9c16a8d01b4c5c92ec
pdf-font-stream PDF embedded font (sfnt) at offset 0x5CBB 5120 bytes
font_01_sfnt_off00006e2e.bin
5c23267bf83e110633e0eeae1b86cd9c1941944dba8a434cf8f0f0a1c76cb903
pdf-font-stream PDF embedded font (sfnt) at offset 0x6E2E 10356 bytes