Malicious PDF — malware analysis report

Static analysis result for SHA-256 992f773cad246e62…

MALICIOUS

PDF

46.8 KB Created: 2020-08-21 17:14:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 920f1363ff04fd2d25ff43f8af99b83f SHA-1: e61e3e269d9f33f936f1bf5be24963f987ec2453 SHA-256: 992f773cad246e623fbc921056f8b9063da99d00751ef17e7bc7abafd244d260
120 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to Shopify domains, but one critical link directs to a known malicious redirector. The document body contains the text 'Chita chola audio' and the malicious URL, suggesting a lure to potentially malicious content. The presence of a malicious redirector indicates an attempt to lead the user to a compromised or malicious site.

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=chita+chola++audio
    • http://files.309brightfuture.org/uploads/1/3/2/6/132683259/vikebefizasu-kineku-kamejozalure.pdf
    • http://files.marjorieorourke.com/uploads/1/3/0/7/130776123/1147fb4250aa.pdf
    • http://files.kv-cleaningservices-uk.org/uploads/1/3/2/6/132682640/vupisop_vukorumamuge.pdf
    • http://sebawus.agkzn.com/uploads/1/3/0/7/130776089/kunasi.pdf
    • https://cdn.shopify.com/s/files/1/0438/0157/5586/files/career_values_scale.pdf
    • https://cdn.shopify.com/s/files/1/0435/8311/1323/files/gomibunejikuzivak.pdf
    • https://cdn.shopify.com/s/files/1/0434/3608/1308/files/36419003735.pdf
    • https://cdn.shopify.com/s/files/1/0437/2476/7383/files/caselet_di_for_ibps_po.pdf
    • https://cdn.shopify.com/s/files/1/0430/5725/0455/files/30211493082.pdf
    • https://cdn.shopify.com/s/files/1/0434/2395/7144/files/sobagozibo.pdf
    • https://cdn.shopify.com/s/files/1/0431/5804/4823/files/gakumaxenidibezawixin.pdf
    • https://cdn.shopify.com/s/files/1/0437/1608/3877/files/juvepoxelabefovemugijisu.pdf
    • https://cdn.shopify.com/s/files/1/0433/4023/4902/files/jodevovuwat.pdf
    • https://cdn.shopify.com/s/files/1/0430/3552/5282/files/37346532857.pdf
    • https://cdn.shopify.com/s/files/1/0429/1824/8601/files/3._5_complete_arcane.pdf
    • https://cdn.shopify.com/s/files/1/0432/5936/3478/files/pibowigeminimomanejif.pdf
    • https://cdn.shopify.com/s/files/1/0433/8155/5350/files/entrepreneurship_development.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/
    • https://cdn.shopify.com/s/files/1/0433/8155/5350/files/entrepreneurship_development.pd

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000070fc.bin
e3ababd7a2eef799ec08c370e1d4e2a557ccdb829ea2ccd8db935f3e000ce219
pdf-font-stream PDF embedded font (sfnt) at offset 0x70FC 4660 bytes
font_01_sfnt_off000080c0.bin
fb4461ce4df8d0e4461c2f5637db6f367512901a73bb53a2b2f279683753bc21
pdf-font-stream PDF embedded font (sfnt) at offset 0x80C0 14448 bytes