Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb14f16959af8660…

MALICIOUS

PDF

67.3 KB Created: 2020-08-24 00:08:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 46c5c88d9dfe04fd4f1acc73504d4c25 SHA-1: d989ecd22f8d1d3670c3a4633087f7e865b69a3e SHA-256: cb14f16959af866006e0bfc05fac9ddb8140e63f014a07454ad447827f5874ee
120 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic identifying a malicious redirector at 'https://ttraff.cc/pify?keyword=cellulose+derivatives+pdf'. Another critical heuristic indicates a PDF link farm, with a benign Shopify URL being the first listed. The document body contains obfuscated text and a reference to the malicious URL, suggesting a lure to a malicious site. No scripts were extracted from this sample.

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=cellulose+derivatives+pdf
    • http://files.wnychamberorchestra.com/uploads/1/3/2/6/132682731/muzotof.pdf
    • https://cdn.shopify.com/s/files/1/0427/4877/2519/files/konajabepefipetunomanod.pdf
    • https://cdn.shopify.com/s/files/1/0431/4136/5922/files/moweruxokiliwem.pdf
    • https://cdn.shopify.com/s/files/1/0430/6462/3265/files/89566502366.pdf
    • https://cdn.shopify.com/s/files/1/0432/9095/1848/files/pedefazesulomesewalax.pdf
    • https://cdn.shopify.com/s/files/1/0433/3328/8088/files/lofarabiluwazozu.pdf
    • https://cdn.shopify.com/s/files/1/0432/6775/2100/files/pumaxigasakiw.pdf
    • https://cdn.shopify.com/s/files/1/0440/2262/8502/files/tenant_agreement_form.pdf
    • https://cdn.shopify.com/s/files/1/0437/9276/0981/files/cogat_bubble_sheet.pdf
    • https://cdn.shopify.com/s/files/1/0437/3400/7973/files/ribedowowadarewu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/34680977850.pdf
    • https://cdn.shopify.com/s/files/1/0433/5337/4874/files/anthropological_thought_upadhyay_and_pandey_download.pdf
    • https://cdn.shopify.com/s/files/1/0434/3778/5240/files/34479632239.pdf
    • https://cdn.shopify.com/s/files/1/0433/5940/4197/files/xeziwixoxalidonibitelaboz.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/
    • https://cdn.shopify.com/s/files/1/0427/4877/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bab7.bin
cf6bcbaf462759e04676f8989e7e87ed4d43c4317550ddbd0c5684ab0bd17b73		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBAB7 6492 bytes
font_01_sfnt_off0000caeb.bin
6584448bcb5dfb47404de2eff693e9997901258076d5a988455293068cf9c105		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCAEB 5000 bytes
font_02_sfnt_off0000dc00.bin
7c75fc54ebc5c75525ba65194c66b5019cfc3626e1d511920160b995c3d7bd7e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDC00 10524 bytes

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