Malicious PDF — malware analysis report

Static analysis result for SHA-256 2044510dceb42cf4…

MALICIOUS

PDF

52.1 KB Created: 2020-08-24 11:40:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4d87af3cc3f7b5af31ec764f280c89d2 SHA-1: 361a70c081a6fda9a783801fbb99f6a3ecdde84d SHA-256: 2044510dceb42cf4297ec5b660e9bb6e1f563c892917925113d49a8d84fb9adc
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a critical heuristic firing for a malicious redirector. The primary malicious URL identified is ttraff.ru, which is used in conjunction with a lure related to a company letter template. While no scripts were extracted, the PDF structure and embedded links strongly suggest a phishing or redirection attempt.

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/pify?keyword=introduction+company+letter+template
    • http://files.bowleylockcompany.com/uploads/1/3/1/4/131452815/nopizusebobobi.pdf
    • http://files.myscarpaalta.com/uploads/1/3/0/7/130775518/af2bfa70b8e5421.pdf
    • http://xisepuxuk.andygibsontv.com/uploads/1/3/1/0/131070313/nujixexit.pdf
    • http://ligepu.madetobellc.com/uploads/1/3/1/4/131438539/625d6ecb26e.pdf
    • https://cdn.shopify.com/s/files/1/0431/3058/5239/files/21237602188.pdf
    • https://cdn.shopify.com/s/files/1/0431/7511/6960/files/82395286195.pdf
    • https://cdn.shopify.com/s/files/1/0436/2718/4281/files/africa_cup_of_nations_2020_schedule.pdf
    • https://cdn.shopify.com/s/files/1/0428/4448/7836/files/mevogimoraveda.pdf
    • https://cdn.shopify.com/s/files/1/0432/5192/5155/files/lojegedoferazesusotuwibix.pdf
    • https://cdn.shopify.com/s/files/1/0437/3174/6967/files/kuvogivaxuzuxunojup.pdf
    • https://cdn.shopify.com/s/files/1/0428/7853/3791/files/how_to_speak_french_fluently.pdf
    • https://cdn.shopify.com/s/files/1/0462/3918/7104/files/participatory_action_research_methods.pdf
    • https://cdn.shopify.com/s/files/1/0434/7900/7384/files/beethoven_biography_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0433/1402/0505/files/selected_topics_inorganic_chemistry.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_off00008231.bin
bcfee5804246ca7f93cfaaeccbb3e58650db6df6ff151fa406d349ff55efdbe1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8231 4960 bytes
font_01_sfnt_off000092f1.bin
43c852be748935b7468bccfd636d1ecafc68bdc31328fc39570b39bdd37ffc39		 pdf-font-stream PDF embedded font (sfnt) at offset 0x92F1 10000 bytes
font_02_sfnt_off0000b520.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB520 4324 bytes

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