Malicious PDF — malware analysis report

Static analysis result for SHA-256 89387b6bfaa005ca…

MALICIOUS

PDF

33.3 KB Created: 2020-08-26 20:16:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 61bb3e3f3722f4216cdaf26516ff9626 SHA-1: 3ad3e53f181c7d418e867fcf917e6aeb31f446e3 SHA-256: 89387b6bfaa005ca3b3cb5c61cf0459bf9bf699533a71d12d096b6ccdcd89cc8
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=dessin+a+decouper+et+a+assembler'. Additionally, it exhibits a PDF link farm, with numerous links to external PDFs hosted on Shopify. The document body, though heavily obfuscated, contains references to these URLs. The primary attack pattern involves luring the user to click on the malicious redirector link, likely leading to further malicious content or exploitation.

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=dessin+a+decouper+et+a+assembler
    • http://pivovu.gordonstounartandphotography.com/uploads/1/3/0/7/130738948/mowazeworat.pdf
    • http://files.maryseaveynhjp.org/uploads/1/3/2/3/132303238/e3c7aeebfdc5.pdf
    • http://files.modelmefamous.com/uploads/1/3/2/6/132682829/zogisun_vogil.pdf
    • http://files.emilystillings.com/uploads/1/3/0/7/130776200/fatepisuvogoduj_siwemuvute.pdf
    • http://files.brantheritagequiltersguild.com/uploads/1/3/1/4/131453934/22de9db.pdf
    • https://cdn.shopify.com/s/files/1/0427/7311/9143/files/serigukowowozovoguzesaper.pdf
    • https://cdn.shopify.com/s/files/1/0440/6509/5845/files/32505173582.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/livoxigugefeguvon.pdf
    • https://cdn.shopify.com/s/files/1/0432/9088/6312/files/gegorotedabidakaf.pdf
    • https://cdn.shopify.com/s/files/1/0433/8706/0378/files/diwewi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gatafuruzakelimosileraji.pdf
    • https://cdn.shopify.com/s/files/1/0428/9485/2252/files/beyond_compare_4_key.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/30347825404.pdf
    • https://cdn.shopify.com/s/files/1/0430/0043/0746/files/rawokilugufasi.pdf
    • https://cdn.shopify.com/s/files/1/0435/4175/8101/files/cancer_de_tiroides_metastasis.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_off00004636.bin
a0ec9c7ced2b9ee4994cf65bf8a83c07e18c48ab9e78d3e448375bd04f43d6a2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4636 5356 bytes
font_01_sfnt_off00005844.bin
be941af3ea067c7c0571541056b855e0b45dc89744e1f0ea68698c2941ebd59f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5844 9348 bytes

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