Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec81958cf0e8a969…

MALICIOUS

PDF

43.8 KB Created: 2020-08-13 04:59:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 94adb2c37f1c9856281b564a8e290abb SHA-1: 66b2463a96a58dd364dda58125ef2054e64e4449 SHA-256: ec81958cf0e8a969a61bfab65ec34979ec3c18e3e9ee15714c001bca1829b90b
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link to a known malicious redirector, disguised as a loan application form. The document also contains a large number of links to various PDFs hosted on Shopify, likely for SEO poisoning or to obscure the malicious redirector. No scripts were extracted, and the document body is heavily obfuscated.

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=icici+bank+home+loan+application+form+pdf
    • http://files.brucejackson.com.au/uploads/1/3/2/7/132712050/ninijukatej-gadepaluseveb.pdf
    • http://files.nfcareers.com/uploads/1/3/2/6/132680901/zulujopo_suvimi.pdf
    • http://files.contentedcomfort.com/uploads/1/3/0/9/130969003/tiserufo.pdf
    • https://cdn.shopify.com/s/files/1/0437/3993/8970/files/vcftools_manual.pdf
    • https://cdn.shopify.com/s/files/1/0432/5802/0000/files/gezodudabu.pdf
    • https://cdn.shopify.com/s/files/1/0431/2514/5760/files/mean_value_theorem_questions.pdf
    • https://cdn.shopify.com/s/files/1/0430/2936/4885/files/poetica_aristoteles_garcia_bacca.pdf
    • https://cdn.shopify.com/s/files/1/0447/2212/7004/files/pharmacology_of_cholinergic_drugs.pdf
    • https://cdn.shopify.com/s/files/1/0435/2134/3647/files/25526954101.pdf
    • https://cdn.shopify.com/s/files/1/0432/5851/1510/files/23243248309.pdf
    • https://cdn.shopify.com/s/files/1/0438/4702/4805/files/wofimimusutidaf.pdf
    • https://cdn.shopify.com/s/files/1/0438/4459/9958/files/face_down_boosie.pdf
    • https://cdn.shopify.com/s/files/1/0430/5272/8474/files/pasabulubaza.pdf
    • https://cdn.shopify.com/s/files/1/0436/4346/9974/files/suremobowe.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004c7d.bin
498d69e4393ee49262bce5434ba7269b3ee3fb93a08620b9f01922eaf149e389		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4C7D 5144 bytes
font_01_sfnt_off00005db5.bin
31361f2cab991f91f73fab44f37f29af0f7aa85ca00c6456a17f8090886c1f67		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DB5 9544 bytes
font_02_sfnt_off00007e8d.bin
ead7fd593d7f5feef6f283420e9b55f8fa4552f107c64b0063d474dd3355abd8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E8D 16164 bytes
font_03_sfnt_off000093a6.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x93A6 4324 bytes

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