Malicious PDF — malware analysis report

Static analysis result for SHA-256 cdc2af03ed3443cd…

MALICIOUS

PDF

42.3 KB Created: 2020-08-06 22:21:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3b00d304599b031895388cea597fa627 SHA-1: 40bfe141c06a3934945500c5f775c4f394444d79 SHA-256: cdc2af03ed3443cd2573e42e4bd5da89cdac672c64a00b77c46bfdbf5e20aa74
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.com/pify?keyword=airfield+ground+lighting+system+pdf'. Additionally, it exhibits characteristics of a PDF link farm, embedding numerous external links, many hosted on Shopify. The document body, though heavily obfuscated, contains the same redirector URL. The primary attack vector appears to be social engineering via a deceptive link within the PDF.

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.com/pify?keyword=airfield+ground+lighting+system+pdf
    • http://files.erikaehughes.com/uploads/1/3/0/9/130969082/wefaxotusegirobin.pdf
    • http://files.kiskibands.org/uploads/1/3/2/6/132682882/c0139c0f9f8.pdf
    • http://files.snatchitgirl.com/uploads/1/3/0/9/130969322/duriven_xelut_vesozipibuzara.pdf
    • https://cdn.shopify.com/s/files/1/0432/8341/5204/files/giximuxowuragovadavuso.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/92904811518.pdf
    • https://cdn.shopify.com/s/files/1/0432/7692/7141/files/bezoxuninogigagezanisa.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/99231100330.pdf
    • https://cdn.shopify.com/s/files/1/0432/6568/7717/files/lazifefazojuderoz.pdf
    • https://cdn.shopify.com/s/files/1/0433/3853/0965/files/72411209168.pdf
    • https://cdn.shopify.com/s/files/1/0437/9469/4304/files/99453775702.pdf
    • https://cdn.shopify.com/s/files/1/0437/0078/1208/files/29204964532.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/68906731860.pdf
    • https://cdn.shopify.com/s/files/1/0431/7259/3832/files/irs_form_9423.pdf
    • https://cdn.shopify.com/s/files/1/0438/4748/3557/files/reservoir_dogs_soundtrack.pdf
    • https://cdn.shopify.com/s/files/1/0432/7833/6165/files/wakamopusanoxo.pdf
    • https://cdn.shopify.com/s/files/1/0435/0866/2440/files/marlin_firmware_anet_a8.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_off0000672a.bin
6121127be55d09af244048ce90b52c8d0f33f90d71c90c669de8b38ee8ca31d6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x672A 5336 bytes
font_01_sfnt_off00007933.bin
7638bfe876d57140c7ddce070ca2ee18bec1c7dc9e9f483f889565434b1ca24b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7933 10332 bytes

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