Malicious PDF — malware analysis report

Static analysis result for SHA-256 32be5ff358eb5294…

MALICIOUS

PDF

41.2 KB Created: 2020-09-05 17:02:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2b3a1b59e0c5ad039a3771d61d7e8ca2 SHA-1: aeeeecc81a58e4ee88696e16495b777bbca2dbc0 SHA-256: 32be5ff358eb529423843ffcd80540d43d90f29f6feb8f731d11513eba2dd59c
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.me/pify?keyword=aluminium+sheet+suppliers+brisbane'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded links, many hosted on cdn.shopify.com. The document body, though partially garbled, contains text related to 'Aluminium sheet suppliers brisbane' and the malicious URL, suggesting a lure to disguise the malicious redirect. The presence of a 'download button' heuristic further supports the social engineering aspect of this attack.

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.me/pify?keyword=aluminium+sheet+suppliers+brisbane
    • https://cdn.shopify.com/s/files/1/0431/6938/2568/files/50465822248.pdf
    • https://cdn.shopify.com/s/files/1/0438/0708/0605/files/delugamitexeturemif.pdf
    • https://cdn.shopify.com/s/files/1/0427/5775/0951/files/sunazedovurogago.pdf
    • https://static.usrfiles.com/ugd/44b221_ac592c7e7704492799e6914f7b5ad12c.pdf
    • https://static.usrfiles.com/ugd/22bf55_5545213268d54c7ba510e477bad21471.pdf
    • https://static.usrfiles.com/ugd/ccb1c6_42a07c235df04169bfcca1a5aa6c14e9.pdf
    • https://static.usrfiles.com/ugd/585b1d_9620a37292694c20805fa5e671d03f80.pdf
    • https://cdn.shopify.com/s/files/1/0436/8292/2646/files/the_analysis_of_covariance_and_alternatives.pdf
    • https://cdn.shopify.com/s/files/1/0433/6749/7880/files/advanced_calculus_solved_problems.pdf
    • https://cdn.shopify.com/s/files/1/0434/5030/2616/files/eset_antivirus_2018_free_for_pc.pdf
    • https://cdn.shopify.com/s/files/1/0437/6766/0693/files/voxiw.pdf
    • https://cdn.shopify.com/s/files/1/0441/3197/5320/files/votegamavivipuwidibutiv.pdf
    • https://static.usrfiles.com/ugd/9cfd0a_ced88e6d13fa431f95219ffb4ced8144.pdf
    • https://static.usrfiles.com/ugd/4fea5c_56815e590fec4e99a7e82bfe981a64d5.pdf
    • https://static.usrfiles.com/ugd/3cb679_483ad1d8ea994b20a932abfacfbd75f0.pdf
    • https://static.usrfiles.com/ugd/e3325f_6b8f76be7dea47cbbf79bd51074d00e3.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_off00005f21.bin
0690654f42fabf492c051284f1625538dbae3b571995b7dd3f333f453ad80d69
pdf-font-stream PDF embedded font (sfnt) at offset 0x5F21 5188 bytes
font_01_sfnt_off00007093.bin
53e28447998da3a1fdd4399276a95bc316054ea65511dee8fef01df22d27967d
pdf-font-stream PDF embedded font (sfnt) at offset 0x7093 11980 bytes