Malicious PDF — malware analysis report

Static analysis result for SHA-256 e93f3095652fe751…

MALICIOUS

PDF

55.8 KB Created: 2020-08-30 16:09:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bc2b03e4882bee4a359e713abc38a6f7 SHA-1: 7d028575df3013e8abd1e7f2c84d32978982bb4b SHA-256: e93f3095652fe7515bb47782fba307dea6803800f85da3e46dbd76d9b948ee96
150 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, which points to 'ttraff.cc'. This URL is presented within the document body, disguised as a search result for 'king of my heart piano sheet music free'. The PDF also exhibits characteristics of a link farm, with numerous embedded URLs, many of which point to Shopify. The primary malicious URL is the entry point for the attack, likely leading to further malicious content or exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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/wix?keyword=king+of+my+heart+piano+sheet+music+free
    • https://cdn.shopify.com/s/files/1/0440/5323/3814/files/55094019132.pdf
    • https://cdn.shopify.com/s/files/1/0435/1839/4523/files/lspdfr_agency_callouts_download.pdf
    • https://cdn.shopify.com/s/files/1/0437/8211/1381/files/nccn_breast_cancer_2018.pdf
    • https://cdn.shopify.com/s/files/1/0432/7201/1941/files/basswood_sheets_for_cricut.pdf
    • https://cdn.shopify.com/s/files/1/0428/9229/6359/files/editing_text_in_adobe_illustrator.pdf
    • https://cdn.shopify.com/s/files/1/0465/0087/2344/files/56118116799.pdf
    • https://cdn.shopify.com/s/files/1/0433/0127/3758/files/bodaxujaxusesibu.pdf
    • https://cdn.shopify.com/s/files/1/0431/8081/8581/files/77671309358.pdf
    • https://cdn.shopify.com/s/files/1/0435/4772/1882/files/punikuwasovikabexanos.pdf
    • https://cdn.shopify.com/s/files/1/0435/6263/1326/files/automatismos_industriales_editex.pdf
    • https://cdn.shopify.com/s/files/1/0433/8548/7516/files/agriculture_university_admission_circular_2020_20_download.pdf
    • https://cdn.shopify.com/s/files/1/0429/8211/3433/files/mp3_skype_recorder.pdf
    • https://cdn.shopify.com/s/files/1/0434/6055/9013/files/jugami.pdf
    • https://cdn.shopify.com/s/files/1/0433/9095/9766/files/employment_agency_agreement_template_free.pdf
    • https://cdn.shopify.com/s/files/1/0438/1832/0029/files/coding_fact_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0432/8108/8670/files/68964609703.pdf
    • https://cdn.shopify.com/s/files/1/0436/0981/7251/files/a_programmer_s_introduction_to_mathematics.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000652b.bin
93a1a2a0e899167be1fa3883150f5927084036318bd628b4228e0ce8c60aca43		 pdf-font-stream PDF embedded font (sfnt) at offset 0x652B 5348 bytes
font_01_sfnt_off00007737.bin
d6683111a0c10101baaeaf943bb19d45752fd8c5fed7d89ccdb3b4ff449407b0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7737 15616 bytes
font_02_sfnt_off0000a51f.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA51F 4324 bytes
font_03_sfnt_off0000b320.bin
af2a07935a45db9096e8056e388e5dc1b544a75ae4a1879aab238bc3ef928b09		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB320 8312 bytes

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