Malicious PDF — malware analysis report

Static analysis result for SHA-256 2879a4b9071f6b79…

MALICIOUS

PDF

43.6 KB Created: 2020-08-14 15:01:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9370dd6fd576d5838540d2345040504a SHA-1: bf5d8003997ba20f637dfb2cee9d491f8fbc68a9 SHA-256: 2879a4b9071f6b7945bc184a88f24ab6088f2688b46926d2614dc47aa8d853b0
120 Risk Score

Malware Insights

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

The PDF file contains a link farm pointing to numerous external PDF files, with one URL identified as a malicious redirector. The document body contains garbled text and embedded URLs, including the malicious redirector. This suggests the document's primary purpose is to redirect the user to malicious infrastructure, likely for further exploitation or credential harvesting.

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.ru/pify?keyword=eus+guided+drainage
    • http://files.benedettagiulianelli.com/uploads/1/3/2/6/132695575/4900237.pdf
    • http://files.nativeadvancement.org/uploads/1/3/1/4/131407135/9908bc.pdf
    • http://gofidi.derlz.com/uploads/1/3/0/7/130738971/f7d0a.pdf
    • http://files.simplepathproducts.com/uploads/1/3/0/7/130740025/wopexosa_levakawarud.pdf
    • http://rimet.alexandracr.com/uploads/1/3/0/9/130969762/4170981.pdf
    • https://cdn.shopify.com/s/files/1/0431/0201/1548/files/chanakya_niti_in_english.pdf
    • https://cdn.shopify.com/s/files/1/0432/9065/6936/files/63868583556.pdf
    • https://cdn.shopify.com/s/files/1/0434/3313/2184/files/galonaxukokitetu.pdf
    • https://cdn.shopify.com/s/files/1/0436/1604/3168/files/fable_2_love_hurts.pdf
    • https://cdn.shopify.com/s/files/1/0434/1478/2104/files/wofinenumewudit.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/riwemabosemuridaredexe.pdf
    • https://cdn.shopify.com/s/files/1/0434/3237/8517/files/fozis.pdf
    • https://cdn.shopify.com/s/files/1/0428/2381/1239/files/80382677336.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/tizerosotusalasebix.pdf
    • https://cdn.shopify.com/s/files/1/0430/7881/1797/files/51242127518.pdf
    • https://cdn.shopify.com/s/files/1/0429/2830/8387/files/33688219496.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_off00006dae.bin
2087bacf3c85034869829491779e48a2780fd07bd3a8ba5851309c006b2ca3a6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DAE 4916 bytes
font_01_sfnt_off00007e73.bin
323d52bd402a34e7da085540d45be76612bbdd2b22109e9bdb84c754792f4416		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E73 10376 bytes

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