Malicious PDF — malware analysis report

Static analysis result for SHA-256 413d3310232d0ce1…

MALICIOUS

PDF

42.0 KB Created: 2020-08-31 12:52:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6cfe9d3fbd5e456a4e53616bdc2c42d9 SHA-1: b5e24409d3dc56a2783d9cda6d4386679fdad51a SHA-256: 413d3310232d0ce11bd4f86c855360dcf1fc3f988327b5a8926221a3304afe84
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 Shopify domains hosting other PDFs. One critical heuristic identified a link to a known malicious redirector at 'ttraff.ru'. This suggests the document is part of a link farm designed to drive traffic to malicious infrastructure, likely for phishing or malware distribution. The document body contains garbled text but includes the target URL and a Shopify link, reinforcing the link farm and redirector findings.

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/wix?keyword=como+hacer+una+prensa+hidraulica+manual
    • https://cdn.shopify.com/s/files/1/0430/9411/4465/files/pigifiz.pdf
    • https://cdn.shopify.com/s/files/1/0430/2913/5514/files/ledij.pdf
    • https://cdn.shopify.com/s/files/1/0433/8289/8840/files/remejutosatapotobiravu.pdf
    • https://cdn.shopify.com/s/files/1/0436/3314/8062/files/crypt_of_lyzandred_the_mad.pdf
    • https://static.usrfiles.com/ugd/4d400c_f2a2ce1f5a0a4016b6bf3a575ce83d24.pdf
    • https://cdn.shopify.com/s/files/1/0432/2423/6199/files/trouble_in_terrorist_town_hacks.pdf
    • https://cdn.shopify.com/s/files/1/0429/6943/2230/files/career_options_after_10th_in_science_stream.pdf
    • https://cdn.shopify.com/s/files/1/0432/2823/3885/files/exemple_d_attestation_de_prise_en_charge_pour_visa_tudiant.pdf
    • https://cdn.shopify.com/s/files/1/0432/0365/7887/files/bridge_to_terabithia_2_full_movie.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xigidewepiwunabifaw.pdf
    • https://static.usrfiles.com/ugd/c63dba_9b6ed78edc894cd7b8d17e1fcd6aa2b5.pdf
    • https://static.usrfiles.com/ugd/9e14ca_fb77d536a58b4d2db023a787716ba413.pdf
    • https://static.usrfiles.com/ugd/aff7ca_d1944be5f20a479fa4366653b465d0c8.pdf
    • https://static.usrfiles.com/ugd/b8c837_11f23be4674c416ebfa7e960a66256f8.pdf
    • https://static.usrfiles.com/ugd/b8c837_39d35689cf7343b5be459bd2bf20f237.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_off0000653b.bin
4b5dfafc317ba9fd371f4c7d785ed3eebf151956ce48c7ccf4ad5d7e715b7364		 pdf-font-stream PDF embedded font (sfnt) at offset 0x653B 5220 bytes
font_01_sfnt_off000076c5.bin
47ced3ed05c7ed4cd1881c24008c0acc8dfc7f3cd94a60304e384a285c83c294		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76C5 10740 bytes

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