Malicious PDF — malware analysis report

Static analysis result for SHA-256 832e2abd9089f65f…

MALICIOUS

PDF

43.9 KB Created: 2020-08-20 11:01:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 57939e0f62dd6116d4b279ed9dc6721b SHA-1: c42de8173a1b3bed9542d34f93eceb713547accd SHA-256: 832e2abd9089f65ff7f4fae1dddc888d26ad8eda608747b3ed7304195dbf3fa4
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=private+browser+pro+2.+4+apk'. This URL is presented to the user as a download for 'Private browser pro 2. 4 apk', indicating a social engineering lure. The document also contains a large number of embedded links, many hosted on shopify.com, suggesting a link farm or SEO poisoning tactic to distribute the malicious redirector.

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=private+browser+pro+2.+4+apk
    • http://files.artspace613.org/uploads/1/3/0/7/130738765/vasilakakolozixolori.pdf
    • https://cdn.shopify.com/s/files/1/0430/2772/6489/files/65062895341.pdf
    • https://cdn.shopify.com/s/files/1/0427/7580/6119/files/gedulukogos.pdf
    • https://cdn.shopify.com/s/files/1/0433/2912/6550/files/28153777009.pdf
    • https://cdn.shopify.com/s/files/1/0432/2073/0020/files/96670314568.pdf
    • https://cdn.shopify.com/s/files/1/0437/5032/6426/files/53657434674.pdf
    • https://cdn.shopify.com/s/files/1/0430/4266/8698/files/47317754162.pdf
    • https://cdn.shopify.com/s/files/1/0433/5940/4197/files/kokuxosotabinuzuzibored.pdf
    • https://cdn.shopify.com/s/files/1/0427/3537/0407/files/41481598488.pdf
    • https://cdn.shopify.com/s/files/1/0433/4603/4853/files/winikorenuk.pdf
    • https://cdn.shopify.com/s/files/1/0439/4565/6488/files/take_the_lead_interpersonal_skills_for_project_managers.pdf
    • https://cdn.shopify.com/s/files/1/0433/7192/1571/files/zefogigozotozaxagusa.pdf
    • https://cdn.shopify.com/s/files/1/0434/8333/2772/files/photobucket_album_downloader_free.pdf
    • https://cdn.shopify.com/s/files/1/0431/7121/7565/files/13360845499.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_off0000649e.bin
eaf6e0ccf28efaa8967f1aa67c6023bd7d4af03b4cea71ad4cfe2c83d1db4350		 pdf-font-stream PDF embedded font (sfnt) at offset 0x649E 5388 bytes
font_01_sfnt_off00007725.bin
e87fbfd6fad4e7b5c038d75d084827655c062047d312a8f215011160c69e860c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7725 13748 bytes

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