Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca26a8af66bc72ff…

MALICIOUS

PDF

48.6 KB Created: 2020-08-08 20:06:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 63f11b5796560b7902bd6339ddaeaea5 SHA-1: 66f0eec8dd54da021d423c049d906ef59238b47d SHA-256: ca26a8af66bc72ff74bd43946796e91ca4a6316f8abc53c3e6a446e0558a55ca
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at 'ttraff.ru'. This suggests a tactic to lure users to malicious content, potentially for phishing or malware distribution. No scripts were extracted, and the document body is heavily obfuscated, but the presence of the malicious redirector is a strong indicator of malicious intent.

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=biolog%25C3%25ADa+de+angiospermas+unam+pdf
    • http://files.heclab.org/uploads/1/3/2/6/132681482/roxapilinojakupudol.pdf
    • http://files.thedogbedcompany.co.uk/uploads/1/3/1/6/131606289/jetusuwonunut_wevabik_xobuxefasen.pdf
    • http://files.sydneynewhorizons.org/uploads/1/3/2/7/132710787/lozaratorepu_tatira.pdf
    • http://xivav.juneberrycottage.com/uploads/1/3/0/7/130738970/f24530ce87477f.pdf
    • http://files.bethelbaptistgso.com/uploads/1/3/2/3/132303068/8361663.pdf
    • https://cdn.shopify.com/s/files/1/0434/4355/2416/files/pekiruluxojisitegom.pdf
    • https://cdn.shopify.com/s/files/1/0435/9330/2178/files/nexus_2_mac.pdf
    • https://cdn.shopify.com/s/files/1/0435/3366/4408/files/58511994872.pdf
    • https://cdn.shopify.com/s/files/1/0432/0837/6482/files/67603048596.pdf
    • https://cdn.shopify.com/s/files/1/0440/6683/2534/files/how_to_be_a_better_leader_book.pdf
    • https://cdn.shopify.com/s/files/1/0432/5667/6507/files/cancer_journal_articles.pdf
    • https://cdn.shopify.com/s/files/1/0428/7981/1750/files/gosekisumawekugipob.pdf
    • https://cdn.shopify.com/s/files/1/0433/9089/4247/files/mograine_s_deathcharger_legion.pdf
    • https://cdn.shopify.com/s/files/1/0429/7395/4204/files/17555361424.pdf
    • https://cdn.shopify.com/s/files/1/0430/9218/1153/files/79913847463.pdf
    • https://cdn.shopify.com/s/files/1/0446/0855/3123/files/steam_voice_chat_not_working.pdf
    • https://cdn.shopify.com/s/files/1/0428/3754/1031/files/silil.pdf
    • https://cdn.shopify.com/s/files/1/0439/3854/5819/files/bumib.pdf
    • https://cdn.shopify.com/s/files/1/0432/9478/5694/files/zutekeniganirosusekuteje.pdf
    • https://cdn.shopify.com/s/files/1/0435/9343/3246/files/maximum_number_of_overlapping_intervals.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_off00006e1f.bin
ee6bc78929c9b3d8d1facd3af694baaba2b712727fcbb32f44b693ee6567a662		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6E1F 5268 bytes
font_01_sfnt_off00007fe8.bin
03ca640950db9bc04dc139f21ecb964701520ca159534883d9d709bbcd58dc77		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7FE8 11392 bytes
font_02_sfnt_off0000a4ec.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA4EC 4324 bytes

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