Malicious PDF — malware analysis report

Static analysis result for SHA-256 434e533914c32ef9…

MALICIOUS

PDF

36.0 KB Created: 2020-08-19 16:31:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 88860ac9e85bc934962c031db121b03f SHA-1: 588eac92297561ee8749198026fa548f2e11feca SHA-256: 434e533914c32ef9b9ebdf6ccfdc032f3da3f8dba721b872c4ad38385382d091
120 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to the presence of a large number of embedded links, a technique often used to create link farms for SEO manipulation or to distribute malicious content. One critical heuristic firing indicates a direct link to a known malicious redirector infrastructure at 'https://ttraff.ru/pify?keyword=relative+clauses+exercise+with+answers'. The document body, though heavily obfuscated, also contains this URL and numerous other links pointing to external PDF files, many hosted on Shopify domains.

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=relative+clauses+exercise+with+answers
    • http://files.pureheartbody.com/uploads/1/3/1/4/131437018/999772aa1c5.pdf
    • http://pexipitiz.larkhallbowlingclub.com/uploads/1/3/1/4/131407552/5370472.pdf
    • https://cdn.shopify.com/s/files/1/0449/0035/2167/files/ssi_representative_payee_form.pdf
    • https://cdn.shopify.com/s/files/1/0428/2561/3468/files/duxavaduwusigusovumavudog.pdf
    • https://cdn.shopify.com/s/files/1/0434/3260/7900/files/honda_cb1000r_2018_owners_manual.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/23535065851.pdf
    • https://cdn.shopify.com/s/files/1/0435/7931/0239/files/57064239608.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/59022585862.pdf
    • https://cdn.shopify.com/s/files/1/0434/2172/8919/files/51440336272.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/97285982277.pdf
    • https://cdn.shopify.com/s/files/1/0432/9131/2288/files/wufim.pdf
    • https://cdn.shopify.com/s/files/1/0433/0127/3758/files/rodizavapisodu.pdf
    • https://cdn.shopify.com/s/files/1/0459/1658/6133/files/zilutapovumas.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/14192803693.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_off00004e87.bin
1afa40dcdd9a701932b77f4894899a78f70803e2e5f98721ccef84b2ba28f5eb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4E87 5112 bytes
font_01_sfnt_off00005ffd.bin
cb523e952c3f0c82387e5b4c40e4567998e1b2329d864f27793caf65fb112e02		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FFD 10388 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.