Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7a345f047ab7bd6…

MALICIOUS

PDF

43.2 KB Created: 2020-08-19 19:52:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 493820c584461ad6cb6563e2a70cf34e SHA-1: eb3cf919d1fba83d80912b7ecebb201ad81d7d0f SHA-256: b7a345f047ab7bd6a38abe02676ca383f3437003ee0a0d0cf4fbb281a494d8fb
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.ru'. This URL is presented within the document body as a 'fashion designer fresher cv template', indicating a social engineering lure. The PDF also exhibits a link farm behavior, with numerous external links, many hosted on Shopify. The primary malicious URL is 'https://ttraff.ru/pify?keyword=fashion+designer+fresher+cv+template', which likely serves as a gateway to further 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.ru/pify?keyword=fashion+designer+fresher+cv+template
    • http://files.hoffmanmi.com/uploads/1/3/1/4/131437987/niriwapakizezasomobi.pdf
    • https://cdn.shopify.com/s/files/1/0430/0010/3073/files/44550294990.pdf
    • https://cdn.shopify.com/s/files/1/0437/2591/4277/files/the_voice_of_the_silence_blavatsky.pdf
    • https://cdn.shopify.com/s/files/1/0430/8549/6482/files/mexufilizabi.pdf
    • https://cdn.shopify.com/s/files/1/0434/7258/4870/files/99642517444.pdf
    • https://cdn.shopify.com/s/files/1/0429/3676/2527/files/biology_notes_for_class_10_cbse_heredity_and_evolution.pdf
    • https://cdn.shopify.com/s/files/1/0432/3134/6856/files/bijugafuwodogira.pdf
    • https://cdn.shopify.com/s/files/1/0432/5969/1163/files/fabazutafu.pdf
    • https://cdn.shopify.com/s/files/1/0438/9008/1944/files/tetagomogotawutorul.pdf
    • https://cdn.shopify.com/s/files/1/0450/2552/5910/files/mubepum.pdf
    • https://cdn.shopify.com/s/files/1/0431/0145/4500/files/imo_safety_signs.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_off000069ea.bin
da1af35d25450c5db61167d8128a2635da4a15f532074ee9bab0060403698c5f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69EA 5584 bytes
font_01_sfnt_off00007cc5.bin
b01da881def5e8551c911dfec1bf95f76cb35fd39409bac29d9aa7ab8fffd27c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CC5 10308 bytes

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