Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1543f8a3a777518…

MALICIOUS

PDF

46.1 KB Created: 2020-08-02 17:52:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7cef7e41cce36ee86921adf91748f418 SHA-1: 0a83865fbd41d11841a640c0bc8ee8f204a5acf4 SHA-256: f1543f8a3a777518b6961d60364d24de2ab77d866e62001f9b289a86c348d555
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, masquerading as search results for specific PDF documents. One of these links, 'https://ttraff.cc/pify?keyword=physical+chemistry+thomas+engel+pdf', redirects to known malicious infrastructure. The document body is heavily obfuscated and contains a mix of text and what appears to be binary data, but the embedded links are the primary indicator of malicious intent. The presence of a link farm suggests an attempt to manipulate search engine results or lure users to malicious sites.

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=physical+chemistry+thomas+engel+pdf
    • http://files.aplmf.net/uploads/1/3/2/7/132740327/wemotuvejowoz.pdf
    • http://files.janansiam.com/uploads/1/3/1/3/131380063/1820511.pdf
    • http://files.dejadurhamphotography.com/uploads/1/3/0/7/130776516/9125049.pdf
    • https://cdn.shopify.com/s/files/1/0434/0760/5923/files/dalugekip.pdf
    • https://cdn.shopify.com/s/files/1/0439/1596/8667/files/dugivom.pdf
    • https://cdn.shopify.com/s/files/1/0433/7824/5781/files/menude.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/27622062760.pdf
    • https://cdn.shopify.com/s/files/1/0437/0019/1387/files/75762934277.pdf
    • https://cdn.shopify.com/s/files/1/0428/3197/0471/files/doxigakegovaninijiket.pdf
    • https://cdn.shopify.com/s/files/1/0436/9252/3675/files/21821503104.pdf
    • https://cdn.shopify.com/s/files/1/0438/4797/5062/files/nodibutajedewibi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0917/0856/files/rapuvexaje.pdf
    • https://cdn.shopify.com/s/files/1/0432/8862/5316/files/52755767304.pdf
    • https://cdn.shopify.com/s/files/1/0428/7181/6358/files/40343972370.pdf
    • https://cdn.shopify.com/s/files/1/0430/7009/5521/files/weseketirofovemomik.pdf
    • https://cdn.shopify.com/s/files/1/0434/0236/3045/files/kivod.pdf
    • https://cdn.shopify.com/s/files/1/0430/6717/9162/files/69342856299.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_off00006af5.bin
cd52d3c4a1bb205399da430f681742d00bffa157b49e8ed135c9b6c6d1b75e46		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6AF5 5672 bytes
font_01_sfnt_off00007e26.bin
f04b41a3d9b58513fa75686da65fedd10c90c464979113e0788b767932faf08e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E26 14620 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.