Malicious PDF — malware analysis report

Static analysis result for SHA-256 18c2c45dfe64c814…

MALICIOUS

PDF

38.6 KB Created: 2020-08-01 17:23:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6f0e867e28881c846cde4a07aedc1708 SHA-1: adb0b6a0dfb70bbd441f5efcb4b2f7898f46950c SHA-256: 18c2c45dfe64c81441afb820ad7b04396b59cd41b380fbdfbe58a1e56047cd89
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a "New York address" lure and embeds a large number of external links, many pointing to other PDFs hosted on Shopify. One of the primary links, https://ttraff.cc/pify?keyword=new+york+address, is identified as a malicious redirector. This suggests a link farm or SEO poisoning attack designed to drive traffic to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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=new+york+address
    • http://files.seniors-who-care.com/uploads/1/3/1/4/131452958/9ac97c.pdf
    • http://files.franzkiekeben.com/uploads/1/3/0/7/130776536/tigasipe.pdf
    • http://files.anikacarpenter.com/uploads/1/3/1/4/131453998/7a5399725b.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0430/4207/8877/files/kijimu.pdf
    • https://cdn.shopify.com/s/files/1/0432/8721/6293/files/37409355139.pdf
    • https://cdn.shopify.com/s/files/1/0429/1005/6615/files/53517191427.pdf
    • https://cdn.shopify.com/s/files/1/0432/2541/5843/files/ceat_angine_6._1.pdf
    • https://cdn.shopify.com/s/files/1/0435/6440/0798/files/76171993274.pdf
    • https://cdn.shopify.com/s/files/1/0428/8158/1209/files/zibuxukasigi.pdf
    • https://cdn.shopify.com/s/files/1/0437/6471/1575/files/army_da_4856.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/66656561998.pdf
    • https://cdn.shopify.com/s/files/1/0434/4646/8769/files/666949399.pdf
    • https://cdn.shopify.com/s/files/1/0436/4396/1494/files/71175243711.pdf
    • https://cdn.shopify.com/s/files/1/0428/6437/8022/files/msi_afterburner_remote_server.pdf
    • https://cdn.shopify.com/s/files/1/0434/1353/6925/files/99264135013.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/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000058c5.bin
35fa602729ded28d235096e0f7e2c62c26bf6cbe0ea1454dfc9a90610eaf3cdf
pdf-font-stream PDF embedded font (sfnt) at offset 0x58C5 5012 bytes
font_01_sfnt_off00006a00.bin
940ac9bb45723295f5599ee7128b19f4955a3a0d7c34b401eafb2d1daf1d4d4b
pdf-font-stream PDF embedded font (sfnt) at offset 0x6A00 10364 bytes