Malicious PDF — malware analysis report

Static analysis result for SHA-256 57c139f9c2e1068c…

MALICIOUS

PDF

47.1 KB Created: 2020-08-24 16:47:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 46d01266000153620954071b5fd3bbe6 SHA-1: 192daf3f21339d1876264cc02f722204ef906a43 SHA-256: 57c139f9c2e1068cd7acf174d68a0ff3537315fffdc6b52f2c917a22cc70859c
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, pointing to 'https://ttraff.ru/pify?keyword=joint+venture+agreement+template'. This URL is presented within the document body, suggesting a social engineering lure to trick the user into clicking it. The file also exhibits characteristics of a link farm, with numerous embedded URLs, many hosted on Shopify. The primary malicious URL is the most critical IOC.

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.ru/pify?keyword=joint+venture+agreement+template
    • http://guxel.junctionhillpentecostalchurch.com/uploads/1/3/0/8/130814328/boxotaritepaw.pdf
    • http://files.chardonhs.org/uploads/1/3/1/3/131380786/femipa.pdf
    • http://vatosa.citywestetns.ie/uploads/1/3/1/0/131071164/kemumu.pdf
    • http://nolila.vickijansma.com/uploads/1/3/1/1/131164250/1322508.pdf
    • https://cdn.shopify.com/s/files/1/0427/8360/4903/files/66367128376.pdf
    • https://cdn.shopify.com/s/files/1/0434/2281/0263/files/tedinamonepetolatupipozas.pdf
    • https://cdn.shopify.com/s/files/1/0440/8151/2613/files/29159802601.pdf
    • https://cdn.shopify.com/s/files/1/0432/1060/4705/files/rossetta_stone_swahili.pdf
    • https://cdn.shopify.com/s/files/1/0433/5868/3291/files/antidepressants_and_weight_gain.pdf
    • https://cdn.shopify.com/s/files/1/0434/7189/6736/files/alimentos_ricos_em_vitamina_c.pdf
    • https://cdn.shopify.com/s/files/1/0432/1126/0062/files/baldur_s_gate_ii_enhanced_edition_manual.pdf
    • https://cdn.shopify.com/s/files/1/0435/6410/5886/files/arbor_acres_plus_broiler_performance.pdf
    • https://cdn.shopify.com/s/files/1/0431/3320/6689/files/62877452596.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_off00007cca.bin
d65260317bc47ed482d1ec4a3f6ce4ff54150a7dcbf2eeb41a344fd6b0cca4b3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CCA 5008 bytes
font_01_sfnt_off00008dc7.bin
d6b71235f9f9fa262cf4438d4e53d9c57a0b6b96cd6fc710b653c6af34637153		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8DC7 9880 bytes

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