Malicious PDF — malware analysis report

Static analysis result for SHA-256 58716e8e3be605af…

MALICIOUS

PDF

47.0 KB Created: 2020-08-21 18:41:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: de2f82628de87df8eaffff2f8a666f7d SHA-1: 831ccad740116b5cad6e9c835ff9c7e7dfe6f033 SHA-256: 58716e8e3be605afea06ce61088fbbece95df7c98afc5c077eb2c3f4654f8f59
128 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many pointing to Shopify-hosted PDF files, characteristic of a link farm. One of these links, https://ttraff.ru/pify?keyword=ashen+eye+android, is identified as a malicious redirector. The presence of a 'download button' heuristic suggests a lure to entice users to click on these links. The document body contains garbled text but also includes the malicious URL and several other Shopify URLs, reinforcing the link farm and redirection attack pattern.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=ashen+eye+android
    • http://files.effroncompany.com/uploads/1/3/1/3/131379759/nuxefejasafilezeke.pdf
    • http://files.suitorsfarm.com/uploads/1/3/1/4/131453894/bemadoxitotiz.pdf
    • https://cdn.shopify.com/s/files/1/0429/7110/3395/files/how_can_i_search_a_in_chrome.pdf
    • https://cdn.shopify.com/s/files/1/0438/0455/7472/files/moviesda_tamil_dubbed_horror_movies.pdf
    • https://cdn.shopify.com/s/files/1/0440/6486/6469/files/fakujuvedadowuguvovuzuf.pdf
    • https://cdn.shopify.com/s/files/1/0434/3100/2269/files/jabavazomosalemefagazubo.pdf
    • https://cdn.shopify.com/s/files/1/0433/7877/0078/files/24037248384.pdf
    • https://cdn.shopify.com/s/files/1/0430/0334/7097/files/cesky_krumlov_self_guided_walking_tour.pdf
    • https://cdn.shopify.com/s/files/1/0439/0577/7832/files/600_pares_biomagneticos.pdf
    • https://cdn.shopify.com/s/files/1/0431/2684/9700/files/6781431042.pdf
    • https://cdn.shopify.com/s/files/1/0435/0482/8580/files/raising_cane_s_menu.pdf
    • https://cdn.shopify.com/s/files/1/0431/8016/3227/files/bob_seger_greatest_hits_2.pdf
    • https://cdn.shopify.com/s/files/1/0434/3758/8646/files/niguzuwe.pdf
    • https://cdn.shopify.com/s/files/1/0434/5207/2088/files/dodofitabuwipigigisop.pdf
    • https://cdn.shopify.com/s/files/1/0434/7278/1478/files/season_17_barbarian_build.pdf
    • https://cdn.shopify.com/s/files/1/0434/5180/9959/files/walamefi.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_off00006668.bin
d2f5062c964b0ca345cc36b5d2c261e34e3a988b8728ce74bf441ad46f2f218d
pdf-font-stream PDF embedded font (sfnt) at offset 0x6668 4680 bytes
font_01_sfnt_off00007632.bin
9a0ddc048e69dcab60d844752e3a3e555ea15786108f6740f55751ae56705e82
pdf-font-stream PDF embedded font (sfnt) at offset 0x7632 13532 bytes
font_02_sfnt_off0000a0e7.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e
pdf-font-stream PDF embedded font (sfnt) at offset 0xA0E7 4324 bytes