Malicious PDF — malware analysis report

Static analysis result for SHA-256 87f75d86c2e95f17…

MALICIOUS

PDF

42.4 KB Created: 2020-07-10 02:15:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 67fddb5b3b5e69bff44148c84f16e590 SHA-1: 9a593dd6abca95df6b3b2d9b462950920fe2a779 SHA-256: 87f75d86c2e95f170cf4bea4763ebdb60f09fb0d421ad24a14d04f6961385363
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, masquerading as a document about geography questions. The primary link redirects to a malicious URL, indicating a phishing or redirection attempt. The heuristic firings confirm the presence of malicious redirector links and a link farm, strongly suggesting the document's purpose is to lead users to harmful sites. No scripts were extracted from this sample.

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=world%20geography%20objective%20questions%20and%20answers%20pdf
    • http://files.simixlaundrydetergent.com/uploads/1/3/1/3/131380001/9599450.pdf
    • http://files.thecuriouscatgiftshop.com/uploads/1/3/2/6/132681596/puwakir.pdf
    • http://files.mygprf.org/uploads/1/3/2/6/132681757/pedaxodak.pdf
    • http://files.mmcpodcast.com/uploads/1/3/1/1/131163851/5390410.pdf
    • http://files.dianapoems.com/uploads/1/3/2/7/132740923/tavasotufozuduxa.pdf
    • http://files.just-verandas.com/uploads/1/3/1/3/131379045/xobuxisedujus_wekabod.pdf
    • http://files.parksidefellowship.org/uploads/1/3/1/4/131482866/vuliviv-kubuwewitaru-zefofo.pdf
    • http://files.sashaskolnik.com/uploads/1/3/0/7/130739699/d1873ff.pdf
    • https://jemuxotuwigi.files.wordpress.com/2020/07/23080502150.pdf
    • https://majuxuw.files.wordpress.com/2020/06/fixesaxufowa.pdf
    • https://pimudan.files.wordpress.com/2020/06/dedumojonimokidugufijomi.pdf
    • https://jesaseg.files.wordpress.com/2020/06/gejebitosuxuxavedojit.pdf
    • https://bijutinibi.files.wordpress.com/2020/07/batavapabinemen.pdf
    • https://zapekijibu.files.wordpress.com/2020/06/37183265375.pdf
    • https://suzonuvo.files.wordpress.com/2020/07/genitedagi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/loxutiwijadewafulon.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/45927795399.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/71340125447.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/72619586694.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/45292738862.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/10699911966.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/jezimix.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_off00006581.bin
3356f19bad9e0432258c0b3001a860a09f18ad84c6b052e10de319a069b8cee5
pdf-font-stream PDF embedded font (sfnt) at offset 0x6581 5908 bytes
font_01_sfnt_off000079bd.bin
fbedff618ea39c33058bc5cc1d63121808007b399b15784f4c460dc8dec04521
pdf-font-stream PDF embedded font (sfnt) at offset 0x79BD 10076 bytes