Malicious PDF — malware analysis report

Static analysis result for SHA-256 97eae612f9318c39…

MALICIOUS

PDF

47.2 KB Created: 2020-08-18 14:42:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 52db4c93fa715f6ccec3a64d14743300 SHA-1: 588aab150cf7816b08639fcfcaff5a98cde4caa7 SHA-256: 97eae612f9318c392e03c13abc2e83ed7a75311769e5032914aa820c913d9187
120 Risk Score

Malware Insights

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

The PDF document contains a mass of external links, many of which are hosted on Shopify domains, suggesting a link farm for SEO manipulation or to obscure malicious redirects. One critical heuristic firing indicates a direct link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=chrome+latest+version++windows+7'. The document body, though heavily obfuscated, contains text related to Chrome updates, reinforcing the lure. The primary intent appears to be redirecting the user to malicious infrastructure via the embedded 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/pify?keyword=chrome+latest+version++windows+7
    • http://files.thetracytrust.co.uk/uploads/1/3/0/7/130739037/wufutomonogikixiko.pdf
    • http://nabogisap.sugarlipscandykw.com/uploads/1/3/2/7/132712207/funowerusebawu.pdf
    • http://files.littlegabba.com/uploads/1/3/1/4/131406344/mokomimodexizaru.pdf
    • http://files.thealbibritefoundation.org/uploads/1/3/1/4/131406797/eb494cad8f295d1.pdf
    • https://cdn.shopify.com/s/files/1/0437/4475/5866/files/canadian_passport_application.pdf
    • https://cdn.shopify.com/s/files/1/0430/5387/5357/files/bekozebud.pdf
    • https://cdn.shopify.com/s/files/1/0430/0773/8019/files/politische_philosophie.pdf
    • https://cdn.shopify.com/s/files/1/0430/1648/7065/files/kozuduwofikidi.pdf
    • https://cdn.shopify.com/s/files/1/0433/8896/0924/files/introduction_to_geographical_information_systems_heywood.pdf
    • https://cdn.shopify.com/s/files/1/0434/4945/0661/files/3914226847.pdf
    • https://cdn.shopify.com/s/files/1/0428/7994/2812/files/angina_estavel_instavel.pdf
    • https://cdn.shopify.com/s/files/1/0432/6385/2712/files/67684950439.pdf
    • https://cdn.shopify.com/s/files/1/0432/6447/5299/files/wodopisina.pdf
    • https://cdn.shopify.com/s/files/1/0432/8059/7152/files/22007040429.pdf
    • https://cdn.shopify.com/s/files/1/0429/2929/1427/files/72863364903.pdf
    • https://cdn.shopify.com/s/files/1/0440/8714/8694/files/98744035911.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vijob.pdf
    • https://cdn.shopify.com/s/files/1/0432/1165/3282/files/99221852448.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_off00007a5e.bin
f7aff08dedff71178ec0f9a80926946e991474a9d755afd2dee0a48a2773aef5
pdf-font-stream PDF embedded font (sfnt) at offset 0x7A5E 5200 bytes
font_01_sfnt_off00008bfe.bin
6582280f9eb8fafb243b65f83c72e267670d0b5a4b020cd69c4b00631bd463f6
pdf-font-stream PDF embedded font (sfnt) at offset 0x8BFE 10420 bytes