Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc7b08afad63a72d…

MALICIOUS

PDF

42.7 KB Created: 2020-08-21 21:29:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 614e0958a402748d92617a1da3498310 SHA-1: 2f9fcfdb78b16bc5ad655045b102412d5b882ff3 SHA-256: cc7b08afad63a72d1e490141554020d0ecc0ab7957ca760848d9de4e9167f0e4
120 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, ttraff.com, disguised within content related to 'bronchial thermoplasty asthma guidelines'. This suggests a phishing or social engineering attack aiming to redirect the user to malicious infrastructure. The file also contains a large number of embedded links, many pointing to Shopify domains, which is characteristic of SEO link farms used to improve search engine ranking for malicious content.

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.com/pify?keyword=bronchial+thermoplasty+asthma+guidelines
    • http://jatizu.josefjakobs.com/uploads/1/3/2/7/132740978/xukuvobirizoj_supitojepubu_nuliwozin_bisegodezevosiw.pdf
    • https://cdn.shopify.com/s/files/1/0435/4949/1359/files/kejirovebexoxabon.pdf
    • https://cdn.shopify.com/s/files/1/0428/9282/0647/files/23045534299.pdf
    • https://cdn.shopify.com/s/files/1/0434/8598/6982/files/garefajinivumilenifoj.pdf
    • https://cdn.shopify.com/s/files/1/0429/2391/7475/files/58338849245.pdf
    • https://cdn.shopify.com/s/files/1/0437/2529/1674/files/tamil_nadu_sc_caste_list_in_tamil.pdf
    • https://cdn.shopify.com/s/files/1/0429/9381/1619/files/nepebexon.pdf
    • https://cdn.shopify.com/s/files/1/0437/1028/3931/files/napanotidok.pdf
    • https://cdn.shopify.com/s/files/1/0430/8962/5250/files/kokulewaxogozalisej.pdf
    • https://cdn.shopify.com/s/files/1/0430/2487/5674/files/wondershare_filmora_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0436/5362/8062/files/megijerafomopiguwimiji.pdf
    • https://cdn.shopify.com/s/files/1/0428/5179/5107/files/aarhus_convention_1998.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_off00006836.bin
d309e603edb679630d3dfa00e5b9e891af4dc55fc6815bcc4cc4937e918984cc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6836 5636 bytes
font_01_sfnt_off00007b35.bin
535c94edd75854c437f7210fa799d6c0c93e8c1345a7ab7648d97be63a9aedb6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B35 10268 bytes

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