Malicious PDF — malware analysis report

Static analysis result for SHA-256 97cdbdbeba4c1c18…

MALICIOUS

PDF

49.9 KB Created: 2020-08-08 06:03:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 794b817e13e6e3979b179707e68d4535 SHA-1: c4136c0ff5d2cac67f6d4dba091fce6346684e24 SHA-256: 97cdbdbeba4c1c1807884fc83363e652b54866d2f48f98271e2239cacd150e91
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=anticonceptivos+colombia+pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, many hosted on Shopify. The document body, though heavily obfuscated, contains the same malicious URL and a benign Shopify URL, suggesting a lure to a malicious site.

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=anticonceptivos+colombia+pdf
    • http://files.magnoliasusedbanduniforms.com/uploads/1/3/2/6/132681192/9137001.pdf
    • http://files.empressreadings.com/uploads/1/3/0/8/130813654/8470633.pdf
    • http://files.ncce-learn.co.uk/uploads/1/3/1/6/131637099/590790.pdf
    • https://cdn.shopify.com/s/files/1/0430/9798/1082/files/51139673371.pdf
    • https://cdn.shopify.com/s/files/1/0432/4841/8973/files/arduino_uno_syntax.pdf
    • https://cdn.shopify.com/s/files/1/0431/3530/3831/files/lusawekeve.pdf
    • https://cdn.shopify.com/s/files/1/0430/8631/5684/files/l_histoire_du_cambodge.pdf
    • https://cdn.shopify.com/s/files/1/0428/7243/8947/files/94585269392.pdf
    • https://cdn.shopify.com/s/files/1/0434/0560/7062/files/62286303248.pdf
    • https://cdn.shopify.com/s/files/1/0432/5857/7046/files/94247880840.pdf
    • https://cdn.shopify.com/s/files/1/0437/8286/5047/files/japanazam.pdf
    • https://cdn.shopify.com/s/files/1/0429/0111/0940/files/46082987710.pdf
    • https://cdn.shopify.com/s/files/1/0433/2892/9947/files/21006385167.pdf
    • https://cdn.shopify.com/s/files/1/0431/2399/8874/files/butukuma.pdf
    • https://cdn.shopify.com/s/files/1/0428/5261/4311/files/pakese.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_off00007746.bin
b0d1be796d830047f42841ecdf1f841613bc49f96bf87429d8012bcfc783ab12		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7746 5184 bytes
font_01_sfnt_off000088ca.bin
9b72faa2b33a35586b3a48d97f071bccbb297d612b494495e4af7aa7a5b8029f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x88CA 10376 bytes
font_02_sfnt_off0000ac38.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAC38 4324 bytes

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