Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5abf413961c249e…

MALICIOUS

PDF

67.3 KB Created: 2020-08-13 00:53:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 597348a6ea7a82c46106cbbf2ee512d6 SHA-1: 1944c4d64bf62512788aafcd4cf38d1617c430e3 SHA-256: e5abf413961c249e03d2c6bf98bad509655ba25c74b0fa30f1eb58f792b2806e
120 Risk Score

Malware Insights

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

The PDF file exhibits characteristics of a link farm, embedding numerous external links, with a significant portion hosted on cdn.shopify.com. One of these links, https://ttraff.ru/wb?keyword=phenylephrine%20hcl%20davis%20pdf, is identified as a malicious redirector. The document body contains garbled text and what appears to be metadata, but the primary malicious activity is the distribution of links.

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/wb?keyword=phenylephrine%20hcl%20davis%20pdf
    • http://bibaso.katemasley.com/uploads/1/3/1/1/131163559/2044744.pdf
    • http://zezaju.caricaturedcvamd.com/uploads/1/3/1/8/131871390/b039b8f936.pdf
    • http://files.baycityenergysmart.org/uploads/1/3/1/0/131070535/sufavukipojukosejar.pdf
    • http://files.starlapps.com/uploads/1/3/1/4/131438202/vafafor.pdf
    • https://cdn.shopify.com/s/files/1/0434/2756/1634/files/josipuzarenemetagagon.pdf
    • https://cdn.shopify.com/s/files/1/0428/5205/7244/files/39045477030.pdf
    • https://cdn.shopify.com/s/files/1/0431/5709/4559/files/kagan_structures_posters.pdf
    • https://cdn.shopify.com/s/files/1/0428/7964/7900/files/tibugagimijiwuzuwosilusi.pdf
    • https://cdn.shopify.com/s/files/1/0429/6101/0842/files/tilefafixusij.pdf
    • https://cdn.shopify.com/s/files/1/0431/5719/2853/files/u1p-_7_battery.pdf
    • https://cdn.shopify.com/s/files/1/0429/3473/0911/files/xazivofepura.pdf
    • https://cdn.shopify.com/s/files/1/0431/0482/9602/files/55131655818.pdf
    • https://cdn.shopify.com/s/files/1/0428/8220/3801/files/81268403139.pdf
    • https://cdn.shopify.com/s/files/1/0439/0020/7272/files/55401074073.pdf
    • https://cdn.shopify.com/s/files/1/0431/3173/2132/files/zigorilome.pdf
    • https://cdn.shopify.com/s/files/1/0440/6460/4310/files/power_amplifier_circuit.pdf
    • https://cdn.shopify.com/s/files/1/0430/8857/6661/files/8494546944.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bea7.bin
03b8b9ee3f31c0679472704b8df5f306657d98e7e85370b72c518cbc92d8a4d2
pdf-font-stream PDF embedded font (sfnt) at offset 0xBEA7 5004 bytes
font_01_sfnt_off0000cf8d.bin
08cf0b908daa4e7243601d3cf137874585c43301946647e3b06828e329e62c94
pdf-font-stream PDF embedded font (sfnt) at offset 0xCF8D 9956 bytes
font_02_sfnt_off0000f1b1.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378
pdf-font-stream PDF embedded font (sfnt) at offset 0xF1B1 4324 bytes