Malicious PDF — malware analysis report

Static analysis result for SHA-256 91d98b3dc05d8fdd…

MALICIOUS

PDF

35.4 KB Created: 2020-08-25 00:41:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7184a86e352ca73c8bd86d8195e1f484 SHA-1: f974b0f789bbcd433b30893fbc1fa08557f265a3 SHA-256: 91d98b3dc05d8fdd2e375cfdd879a3067819b905fa6f2d962aa6fd0d1d1baacc
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a mass of external links, a common technique for SEO poisoning and driving traffic to malicious sites. One of the embedded URLs, 'https://ttraff.cc/pify?keyword=netflix+app++auf+laptop', is identified as a malicious redirector. The document body, though heavily corrupted, contains fragments that appear to be related to the 'Netflix app' lure, reinforcing the malicious intent. The presence of numerous links to Shopify-hosted PDFs suggests an attempt to blend malicious content with seemingly legitimate resources.

Heuristics 3

  • 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.
  • 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.cc/pify?keyword=netflix+app++auf+laptop
    • http://files.inlinereferencecheck.ca/uploads/1/3/1/0/131069819/gavurixubarujow-fetuvijixe-posori.pdf
    • https://cdn.shopify.com/s/files/1/0436/9527/6187/files/dfinition_de_transformation_chimique.pdf
    • https://cdn.shopify.com/s/files/1/0435/5093/3155/files/bioaccumulation_definition.pdf
    • https://cdn.shopify.com/s/files/1/0436/1430/6466/files/fire_emblem_three_houses_edelgard_route_guide.pdf
    • https://cdn.shopify.com/s/files/1/0432/6303/3502/files/food_list_for_diabetics.pdf
    • https://cdn.shopify.com/s/files/1/0431/6807/1836/files/75223527653.pdf
    • https://cdn.shopify.com/s/files/1/0431/6335/3250/files/pinifikadusulopuv.pdf
    • https://cdn.shopify.com/s/files/1/0447/1295/1961/files/judas_priest_love_bites.pdf
    • https://cdn.shopify.com/s/files/1/0433/6756/3420/files/wufofalokin.pdf
    • https://cdn.shopify.com/s/files/1/0434/4155/3575/files/silovexanujuvapikige.pdf
    • https://cdn.shopify.com/s/files/1/0438/4414/1218/files/casio_hr_100tm_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/4986/8703/files/33497214653.pdf
    • https://cdn.shopify.com/s/files/1/0430/6075/6641/files/dls_2019_mod_apk_liga_indonesia.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_off00004e54.bin
c2d3330b2fede1249e68f02ee20112cfea55b6c761e789fba4873ca7690b4956		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4E54 4656 bytes
font_01_sfnt_off00005e4f.bin
09b4d3a08184fe3f6cb2b2bf4566bd43d24db3c5cb49350e47d1bf880a7f8a01		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E4F 10636 bytes

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