Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca83cce0b072ef8a…

MALICIOUS

PDF

48.9 KB Created: 2020-08-23 23:14:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 90dc8b85a852ffeb8cde149ae2072754 SHA-1: 4067081b3ab43cdc3e4ed6ed3ac01e816426c0ae SHA-256: ca83cce0b072ef8a994653951040af4e4a0ebcb8e035f4e753d19f2451d6b360
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically `https://ttraff.cc/pify?keyword=bidadari+surga+film`. It also contains a large number of embedded links, many pointing to Shopify domains, suggesting a link farm or distribution mechanism. The document body, though heavily obfuscated, contains the same malicious URL and a film title, indicating a lure. The primary intent appears to be redirecting the user to malicious content.

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=bidadari+surga+film
    • http://files.psychocare.org/uploads/1/3/1/4/131453982/xusozigik.pdf
    • http://files.pressnellcreative.com/uploads/1/3/2/6/132683168/kumosejaduve.pdf
    • https://cdn.shopify.com/s/files/1/0434/3506/5505/files/lekemofomukur.pdf
    • https://cdn.shopify.com/s/files/1/0429/8643/8807/files/natobupesewepunikujo.pdf
    • https://cdn.shopify.com/s/files/1/0428/0477/3031/files/konurixu.pdf
    • https://cdn.shopify.com/s/files/1/0436/5769/1294/files/83845267619.pdf
    • https://cdn.shopify.com/s/files/1/0429/0271/6572/files/berodual_ulotka.pdf
    • https://cdn.shopify.com/s/files/1/0431/1734/6982/files/68129850537.pdf
    • https://cdn.shopify.com/s/files/1/0433/8457/0019/files/dovexuwebakodipizul.pdf
    • https://cdn.shopify.com/s/files/1/0432/9019/8180/files/aortic_dissection_guidelines_2020.pdf
    • https://cdn.shopify.com/s/files/1/0432/6467/1904/files/8184564682.pdf
    • https://cdn.shopify.com/s/files/1/0430/6688/4250/files/76049258964.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_off00007654.bin
3191af4d3c645b4992d5b5472b6e5530bb3509ef78bd744fc0281b97eb4e3a75		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7654 5276 bytes
font_01_sfnt_off00008829.bin
e3bb2f5e30d74d4fc5aa8cbef5ad185c698a7cc5ab7ed20855162dc625935ac0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8829 15192 bytes

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