Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d847aec57039e41…

MALICIOUS

PDF

54.8 KB Created: 2020-08-30 22:51:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ffe505d101bbbc8b65fdcb7a47687d51 SHA-1: c1cee4212e72420ea2132e1a4be8a444146a4f6e SHA-256: 1d847aec57039e4159ae70c7f0979d997a8f04e0fd3a4c6b5a42e6629dca22e7
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, identified as a link farm. One of these links, 'https://ttraff.com/wix?keyword=paul+enrique+espinosa+osterloh', is flagged as a known malicious redirector. The presence of a link farm and a malicious redirector strongly suggests an attempt to lure users to malicious sites, likely for phishing or malware delivery.

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.com/wix?keyword=paul+enrique+espinosa+osterloh
    • https://static.usrfiles.com/ugd/affb4a_65705b1f7970457a87e904733e359f88.pdf
    • https://static.usrfiles.com/ugd/b8c837_5c9f39ed0de14c4eb5c44c0f4445f9c1.pdf
    • https://static.usrfiles.com/ugd/b8c837_d9bf10fd218648429d05d082aadd9c27.pdf
    • https://static.usrfiles.com/ugd/b8c837_da1b1a8103a14a45aa0ef5dd491053d8.pdf
    • https://static.usrfiles.com/ugd/b8c837_e407f7480ea944ae9fee65e7533c5980.pdf
    • https://cdn.shopify.com/s/files/1/0437/6671/0433/files/tekowu.pdf
    • https://cdn.shopify.com/s/files/1/0434/2874/1272/files/fesat.pdf
    • https://cdn.shopify.com/s/files/1/0429/2427/7927/files/43896885968.pdf
    • https://cdn.shopify.com/s/files/1/0431/5113/0785/files/variance_function_in_r.pdf
    • https://cdn.shopify.com/s/files/1/0434/5089/2454/files/4chan_v_catalog.pdf
    • https://cdn.shopify.com/s/files/1/0438/2621/7120/files/unblock_tv_box_apk.pdf
    • https://cdn.shopify.com/s/files/1/0431/7960/6177/files/belkin_router_monitor_software.pdf
    • https://cdn.shopify.com/s/files/1/0431/6761/3077/files/ffxv_strategy_guide_download.pdf
    • https://cdn.shopify.com/s/files/1/0427/7361/0663/files/wujuxalurusifuxatovatu.pdf
    • https://cdn.shopify.com/s/files/1/0437/3191/0821/files/python_date_difference.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_off00008d6b.bin
4207b99b3a06e8164bfed82b5cd56a19bffa7ca8bff32272e8f66270f4700282		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8D6B 4916 bytes
font_01_sfnt_off00009e0f.bin
bd3a742dc4236faa6372cda5b88e7c8e6ef4e0ae91c532201875eac011a0ef07		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9E0F 9972 bytes
font_02_sfnt_off0000c046.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC046 4324 bytes

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