Malicious PDF — malware analysis report

Static analysis result for SHA-256 cae34533069ecece…

MALICIOUS

PDF

67.6 KB Created: 2020-08-27 13:08:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 881a75677858427b4138cd6cccb2b7dd SHA-1: 0b232790e5c9fccb484bc12d2e28bca4b4afc0a5 SHA-256: cae34533069ececeaf08ad04b65e63b6b96cff45bb1e6e7f294cd53229070d46
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com, and one specifically to a known malicious redirector at ttraff.cc. This indicates a social engineering attempt to direct users to malicious content. The document body itself is heavily obfuscated and contains the malicious redirector URL, further supporting this attack pattern.

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=estructuras+artificiales+gif
    • http://files.marsparentgroup.com/uploads/1/3/1/4/131437561/zododawuf.pdf
    • http://files.shetlanddesigner.com/uploads/1/3/1/4/131438501/a0eb149f2871.pdf
    • http://napas.flyajetsim.com/uploads/1/3/0/9/130969690/sagivi.pdf
    • https://cdn.shopify.com/s/files/1/0462/3692/6103/files/pokemon_ruby_v_1.0_rom.pdf
    • https://cdn.shopify.com/s/files/1/0435/8170/2303/files/wacom_bamboo_cth-_470.pdf
    • https://cdn.shopify.com/s/files/1/0430/2392/5402/files/73500937051.pdf
    • https://cdn.shopify.com/s/files/1/0434/0200/2595/files/adaptive_leadership_model.pdf
    • https://cdn.shopify.com/s/files/1/0436/0850/6531/files/haiku_fan_user_guide.pdf
    • https://cdn.shopify.com/s/files/1/0433/1382/3909/files/buscar_informacion_de_personas_por_dni_peru.pdf
    • https://cdn.shopify.com/s/files/1/0435/7177/3601/files/19782133483.pdf
    • https://cdn.shopify.com/s/files/1/0433/8126/0440/files/45347894498.pdf
    • https://cdn.shopify.com/s/files/1/0458/2368/8867/files/the_good_doctor_korean_movie.pdf
    • https://cdn.shopify.com/s/files/1/0431/2681/6932/files/68692238587.pdf
    • https://cdn.shopify.com/s/files/1/0439/8533/8526/files/paxanibalagomuba.pdf
    • https://cdn.shopify.com/s/files/1/0435/5309/5844/files/806146854.pdf
    • https://cdn.shopify.com/s/files/1/0432/9901/2766/files/649_f_6045.pdf
    • https://cdn.shopify.com/s/files/1/0434/4984/3868/files/english_grammar_brush_up.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_off0000cb76.bin
c9e58a6a4f983ba7f392f0710898b07079a45b00a6221e1416f851c88ad9c90d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCB76 5004 bytes
font_01_sfnt_off0000dc8c.bin
7b3da2bdc07139faa5c2a8efcf673a0ae7d5bbf1d500c1036be7381c5259aea7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDC8C 11196 bytes

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