Malicious PDF — malware analysis report

Static analysis result for SHA-256 9eae18f82157d584…

MALICIOUS

PDF

43.1 KB Created: 2020-08-13 00:33:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bb99a1592afaebaa6b2aad70dbd7b0eb SHA-1: 3f5b8aac3cd5d4a651d0cf52514fac88abfa0d70 SHA-256: 9eae18f82157d5840d39a60d881586485ca8f67815b820b050f586e9a6190780
150 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at ttraff.com. This suggests an attempt to lure users to malicious infrastructure, potentially for phishing or malware distribution. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted from this sample.

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.com/wb?keyword=drawing%20scaled%20copies%20worksheet
    • http://files.margaretgracie.com/uploads/1/3/0/7/130740573/dobaj_megop_jesitoputivor_milerugujivageg.pdf
    • http://files.austin.foodecosystem.org/uploads/1/3/1/6/131606789/geguzozufozixukekug.pdf
    • http://files.legalpythia.com/uploads/1/3/1/3/131380717/90fc42.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/velokiw.pdf
    • https://cdn.shopify.com/s/files/1/0437/4836/0343/files/bible_commentary_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/6750/6849/files/bepeka.pdf
    • https://cdn.shopify.com/s/files/1/0435/9723/4338/files/realistic_rock_carmine_appice.pdf
    • https://cdn.shopify.com/s/files/1/0433/4298/7423/files/77802716933.pdf
    • https://cdn.shopify.com/s/files/1/0433/4551/0568/files/37686022202.pdf
    • https://cdn.shopify.com/s/files/1/0433/5550/4794/files/lubiwetanewidusezuteluzag.pdf
    • https://cdn.shopify.com/s/files/1/0431/7796/7778/files/rikelev.pdf
    • https://cdn.shopify.com/s/files/1/0428/4727/3116/files/garivozevigulewanipuj.pdf
    • https://cdn.shopify.com/s/files/1/0435/4654/2229/files/cohen_capitalism_freedom_and_the_proletariat.pdf
    • https://cdn.shopify.com/s/files/1/0432/0670/5311/files/kalnirnay_jan_2020_marathi_calendar.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_off000069af.bin
6069ebc469edfb9d64d21f8a5a93eecd60684e81e888d6b5f8e521e140fec093		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69AF 5488 bytes
font_01_sfnt_off00007c5f.bin
9368fc65ac925f95034b0aefb045ef7bec462cdec6a3f6f35040767ea2d52c0d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C5F 10340 bytes

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