Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe17c71c461295f3…

MALICIOUS

PDF

41.1 KB Created: 2020-08-05 01:12:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 42da0b934c07997a8a7141fdce617acd SHA-1: a3bedbf62b3226a58a39447321afd06a4c63aa99 SHA-256: fe17c71c461295f3f02f78ccaf8d19ed5a0368ea76c41d0a7d824ed5d87e8fee
120 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, with one identified as a malicious redirector. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK indicates that the primary URL, https://ttraff.ru/pify?keyword=calendario+laboral+2020+barcelona+pdf, leads to known malicious infrastructure. The PDF_SEO_LINK_FARM heuristic further suggests the document is part of a link farm, likely intended to distribute malicious content or phish users. No scripts were extracted from this sample.

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=calendario+laboral+2020+barcelona+pdf
    • http://files.moniquebmx.com/uploads/1/3/2/7/132740545/wijifexusilosit-rekuxibu-gegojo.pdf
    • http://files.wonderfullymadecollections.com/uploads/1/3/1/3/131379615/2822531.pdf
    • http://files.poweruperasmus.com/uploads/1/3/1/3/131398000/juvenaxevovori.pdf
    • http://files.alexsarkisian.com/uploads/1/3/1/6/131606011/wuvesukonivasil.pdf
    • https://cdn.shopify.com/s/files/1/0429/8362/0757/files/50326835090.pdf
    • https://cdn.shopify.com/s/files/1/0431/5735/6710/files/half_life_2_episode_1walkthrough.pdf
    • https://cdn.shopify.com/s/files/1/0439/5122/7038/files/953757471.pdf
    • https://cdn.shopify.com/s/files/1/0436/5893/6473/files/what_is_the_max_width_for_mobile.pdf
    • https://cdn.shopify.com/s/files/1/0437/9197/4557/files/93983085947.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kewosa.pdf
    • https://cdn.shopify.com/s/files/1/0427/9628/6111/files/28641198501.pdf
    • https://cdn.shopify.com/s/files/1/0427/9202/6271/files/84381341453.pdf
    • https://cdn.shopify.com/s/files/1/0440/3704/6437/files/bifemuvedex.pdf
    • https://cdn.shopify.com/s/files/1/0441/0785/8072/files/givulebuxasibipetoru.pdf
    • https://cdn.shopify.com/s/files/1/0437/7542/6722/files/65448722880.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_off000061c3.bin
069d8d0787e85ddeb3b4d090e618eef36f219d950dc9cb563367ed24edf0c373		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61C3 5288 bytes
font_01_sfnt_off000073c3.bin
86a1d79869270b32409bca807aec26698efb3c37cb7c74531d23d6672bf82271		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73C3 11108 bytes

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