Malicious PDF — malware analysis report

Static analysis result for SHA-256 34b2c4f252fdd35f…

MALICIOUS

PDF

45.2 KB Created: 2020-08-27 14:22:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5246884570fbf30558d763edda569c8b SHA-1: 1f77eafc1e182cf7a90efa6e1a733d6c7eec1948 SHA-256: 34b2c4f252fdd35f42404fc0011b43d671144005e52722e6f65cda00d6379368
120 Risk Score

Malware Insights

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

The PDF file exhibits characteristics of a link farm, embedding numerous external links. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=sistema+de+lubricacion+del+motor+die'. The document body, though heavily obfuscated, also contains this URL and other Shopify-hosted PDF links, suggesting a coordinated effort to distribute malicious content or conduct phishing attacks. No scripts were extracted, limiting the analysis of direct payload execution.

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.ru/pify?keyword=sistema+de+lubricacion+del+motor+die
    • http://lufosake.wingerlab.org/uploads/1/3/1/4/131437254/8072ddf84a220a0.pdf
    • http://files.hasaonline.com/uploads/1/3/1/4/131453124/netegute.pdf
    • https://cdn.shopify.com/s/files/1/0431/7967/1718/files/73237233157.pdf
    • https://cdn.shopify.com/s/files/1/0438/5813/3152/files/25186952889.pdf
    • https://cdn.shopify.com/s/files/1/0434/3277/1750/files/42015080467.pdf
    • https://cdn.shopify.com/s/files/1/0432/3170/7294/files/rodixedebujotaw.pdf
    • https://cdn.shopify.com/s/files/1/0432/1561/8203/files/89370079391.pdf
    • https://cdn.shopify.com/s/files/1/0434/6665/3858/files/48839457863.pdf
    • https://cdn.shopify.com/s/files/1/0448/0807/7473/files/open_e_aadhar_card_download_file_password.pdf
    • https://cdn.shopify.com/s/files/1/0429/8869/9802/files/novo_catalogo_hinode_ciclo_3_2020.pdf
    • https://cdn.shopify.com/s/files/1/0433/1818/2041/files/back_exercises_sciatica.pdf
    • https://cdn.shopify.com/s/files/1/0435/4854/1087/files/toxic_effects_of_lead.pdf
    • https://cdn.shopify.com/s/files/1/0436/1384/7714/files/44982578937.pdf
    • https://cdn.shopify.com/s/files/1/0429/5557/1353/files/bijolinepagofenifusopipev.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000627e.bin
9d829fb4b927e4b361d1c0ed5f1303f3de08e70bc08ed25bf27cb169682cdb4a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x627E 5208 bytes
font_01_sfnt_off000073f9.bin
d743a940d405f5ee784719c52e701c397c8117929dba081c807ebb9537866243		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73F9 11496 bytes
font_02_sfnt_off00009972.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9972 4324 bytes

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