Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c52230cf23c0419…

MALICIOUS

PDF

71.4 KB Created: 2020-08-12 04:20:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 71ba7ffa6d66628b3c47f60c85732a96 SHA-1: 7dc38f854cd645d2d4d1c94ac94706f2c95c7c7e SHA-256: 1c52230cf23c0419335ef2387a1b63a5eeea5d9a034c1cc4b25aea8a5a84fd32
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 'https://ttraff.ru/pify?keyword=que+es+inotropismo+y+cronotropismo+pdf'. This URL is embedded within the document body, suggesting a phishing or scam attempt to redirect users to a malicious site. The PDF also contains a large number of external links, indicating a link farm, further supporting a malicious intent. 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=que+es+inotropismo+y+cronotropismo+pdf
    • http://files.metzking.com/uploads/1/3/0/9/130969659/5308472.pdf
    • http://mirik.weareworking2gether.org/uploads/1/3/2/6/132681352/4e99fe0d05760b.pdf
    • http://files.jorellmelendezbadillo.com/uploads/1/3/2/7/132740204/buvafepodij_xogevuditiza_rudularivodife_natanevusa.pdf
    • http://files.metzking.com/uploads/1/3/0/9/130969659/5308472.p
    • https://cdn.shopify.com/s/files/1/0434/0639/3496/files/85919882665.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/85155057715.pdf
    • https://cdn.shopify.com/s/files/1/0455/4260/4965/files/astm_dictionary_of_engineering_science_and_technology.pdf
    • https://cdn.shopify.com/s/files/1/0429/7719/8229/files/nadifijeroz.pdf
    • https://cdn.shopify.com/s/files/1/0428/8220/3801/files/vawaxosib.pdf
    • https://cdn.shopify.com/s/files/1/0427/8134/3900/files/gokezomesalilalune.pdf
    • https://cdn.shopify.com/s/files/1/0428/5677/5839/files/90910151872.pdf
    • https://cdn.shopify.com/s/files/1/0430/3188/8021/files/kisadofiw.pdf
    • https://cdn.shopify.com/s/files/1/0436/2017/1936/files/bonhoeffer_ethics.pdf
    • https://cdn.shopify.com/s/files/1/0427/9474/6023/files/morivib.pdf
    • https://cdn.shopify.com/s/files/1/0437/1375/7339/files/ap_biology_campbell_8th_edition_download.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_off0000d92e.bin
7d73394067c182404de94a7d72a98589a20c54c43755b90bd59bf778c654f8ae		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD92E 5224 bytes
font_01_sfnt_off0000eae4.bin
ee7cf1607ffa0a4b9d3adada111f35fa4605a169839020a07b5d96b80fd65bfb		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEAE4 11476 bytes

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