Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3339212363735f5…

MALICIOUS

PDF

48.5 KB Created: 2020-08-19 19:47:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4fb4e23a840026d80c340e66ac516693 SHA-1: 95cfc2449ea0cdeb9c6f94870de006c11915d37d SHA-256: e3339212363735f5f0cdcaca75b24c83bbfe092415e37564741fa7dd32b8b9b5
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with a critical heuristic firing indicating a link farm pointing to a malicious redirector. The primary malicious URL identified is https://ttraff.ru/pify?keyword=amandla+stenberg+songs. The document body is heavily obfuscated but contains references to the redirector URL and other benign-looking PDF links hosted on Shopify. The overall purpose appears to be directing users to malicious or scam content through a link farm.

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=amandla+stenberg+songs
    • http://xoxaluseb.businesseducationmsde.com/uploads/1/3/0/7/130740178/df913c85efdd99f.pdf
    • http://tilasu.ashimasood.com/uploads/1/3/0/7/130775934/pojonuresopelu-gabugebemiluxog.pdf
    • http://files.tylerjonesmusician.com/uploads/1/3/2/8/132814544/buzifipomola.pdf
    • http://files.truth-is-beauty.com/uploads/1/3/2/7/132711954/f42b68394.pdf
    • http://retevopi.womensgivingcircle.org/uploads/1/3/1/0/131070872/toriba.pdf
    • https://cdn.shopify.com/s/files/1/0430/8425/1285/files/calculus_early_transcendentals_6th_edition_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0437/8863/2213/files/katori_blouse_cutting_and_stitching.pdf
    • https://cdn.shopify.com/s/files/1/0432/1263/6315/files/wewogamisoruvorutu.pdf
    • https://cdn.shopify.com/s/files/1/0438/0921/0529/files/professional_baking_wayne_gisslen.pdf
    • https://cdn.shopify.com/s/files/1/0438/9643/8936/files/sewalubu.pdf
    • https://cdn.shopify.com/s/files/1/0437/6186/0757/files/vivah_film_full_song.pdf
    • https://cdn.shopify.com/s/files/1/0430/8713/4882/files/86790318550.pdf
    • https://cdn.shopify.com/s/files/1/0438/3988/1376/files/94100257523.pdf
    • https://cdn.shopify.com/s/files/1/0439/7151/0430/files/crystal_oscillator_working.pdf
    • https://cdn.shopify.com/s/files/1/0437/9069/6597/files/36147884607.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_off00007ee8.bin
abd4b08d54c199036660d50751afcfa9eabf3f46abb22933444e6fdf70ee26f8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7EE8 5276 bytes
font_01_sfnt_off000090ae.bin
dd86b0f9cf112481e68e26073d66959489efb8227199c65277b8604a3fa70a18		 pdf-font-stream PDF embedded font (sfnt) at offset 0x90AE 10704 bytes

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