Malicious PDF — malware analysis report

Static analysis result for SHA-256 280c09a89fc25131…

MALICIOUS

PDF

46.2 KB Created: 2020-08-24 22:16:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8d3bba52124eec23c4562b573a969b09 SHA-1: 40a0cb367ca8f51cbbe7ee36a914f79466956d35 SHA-256: 280c09a89fc251318c8d8187fe2de0a25beb660c775a5bff7fcabf865b8ab5a2
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, including a critical redirector link to ttraff.cc. This indicates a link farm designed to direct users to malicious content. The document body, though heavily obfuscated, contains the same redirector URL, reinforcing its malicious intent. No scripts were extracted, but the PDF structure and link farm strongly suggest a malicious redirection attack.

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=scrambled+paragraphs+worksheets+free
    • http://tefomeg.michellebergermd.com/uploads/1/3/2/7/132741009/5f1ac9e672e86c.pdf
    • https://cdn.shopify.com/s/files/1/0434/3640/8982/files/konibasep.pdf
    • https://cdn.shopify.com/s/files/1/0429/9603/9839/files/71786634242.pdf
    • https://cdn.shopify.com/s/files/1/0429/2929/1427/files/biohacking_exercise.pdf
    • https://cdn.shopify.com/s/files/1/0432/8869/0844/files/10596259340.pdf
    • https://cdn.shopify.com/s/files/1/0435/1596/9688/files/19254175176.pdf
    • https://cdn.shopify.com/s/files/1/0427/8606/2495/files/91390563273.pdf
    • https://cdn.shopify.com/s/files/1/0428/0123/4076/files/40719796921.pdf
    • https://cdn.shopify.com/s/files/1/0434/3722/8188/files/elektrik_arpmasna_yaklam.pdf
    • https://cdn.shopify.com/s/files/1/0428/3501/7884/files/87787422331.pdf
    • https://cdn.shopify.com/s/files/1/0429/7143/1065/files/wowamesufitowar.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_off0000677b.bin
be7d07326508dfd86ad1c5c55b64d520cd1f7a845d67a888700e8ac087a83016		 pdf-font-stream PDF embedded font (sfnt) at offset 0x677B 5968 bytes
font_01_sfnt_off00007bb2.bin
a7c1cd38c31439b0fa2ea1eade9a77ca2a15ab7f17634d87e7f6f71f43f11c0b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7BB2 15880 bytes

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