Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a0fb0fe0f74bea9…

MALICIOUS

PDF

46.7 KB Created: 2020-08-11 22:45:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7502680523f7de8de124e5f1181b1ff6 SHA-1: eb53fb74979fd404adc1a6ec58baee6c87915b9b SHA-256: 3a0fb0fe0f74bea9346b052c5afe6dc7a62b60f2844eb0fe9032184b9abe3e27
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, a common tactic for SEO poisoning and link farms. One of these links, 'https://ttraff.ru/pify?keyword=maine+counties+map+pdf', is identified as a known malicious redirector. The document body, though heavily obfuscated, appears to contain the same URL, suggesting the primary intent is to drive traffic to malicious infrastructure. No scripts were extracted, limiting further analysis of the payload.

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=maine+counties+map+pdf
    • http://viworeza.cyfairorchestra.com/uploads/1/3/1/4/131438464/a9be3386b013ef.pdf
    • http://files.carlystong.com/uploads/1/3/2/6/132695586/gogulijujet_vapapezuropizi_duburobugam.pdf
    • http://files.theinnerstrengthlife.com/uploads/1/3/2/7/132741334/wezomaw.pdf
    • https://cdn.shopify.com/s/files/1/0435/2458/7672/files/18936314769.pdf
    • https://cdn.shopify.com/s/files/1/0430/6649/1042/files/learn_english_in_gujarati_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/8602/0761/files/rilezi.pdf
    • https://cdn.shopify.com/s/files/1/0430/7045/5965/files/99806158395.pdf
    • https://cdn.shopify.com/s/files/1/0434/5511/9512/files/99196858045.pdf
    • https://cdn.shopify.com/s/files/1/0434/9899/5877/files/61540920859.pdf
    • https://cdn.shopify.com/s/files/1/0439/6164/7262/files/lokij.pdf
    • https://cdn.shopify.com/s/files/1/0431/1410/2951/files/satisfaction_in_canteen_services.pdf
    • https://cdn.shopify.com/s/files/1/0436/7430/4662/files/telecharger_oxford_picture_dictionary_english_arabic.pdf
    • https://cdn.shopify.com/s/files/1/0429/8804/4442/files/tobaliwekarokobixuzike.pdf
    • https://cdn.shopify.com/s/files/1/0431/6761/3087/files/debijirel.pdf
    • https://cdn.shopify.com/s/files/1/0438/3624/4118/files/mebaroxolixavinirosudaruk.pdf
    • https://cdn.shopify.com/s/files/1/0436/9609/5397/files/97911898477.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006cbe.bin
c86243b7c7c9243d11c4464085e99bcbdc3df3ab362c28ed44ce770c8d64b6ae
pdf-font-stream PDF embedded font (sfnt) at offset 0x6CBE 5060 bytes
font_01_sfnt_off00007ddf.bin
94700268ce8b8a9549733b80fead6758603b41cdfb8adbeab85511896bfdd95f
pdf-font-stream PDF embedded font (sfnt) at offset 0x7DDF 9888 bytes
font_02_sfnt_off00009fb9.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e
pdf-font-stream PDF embedded font (sfnt) at offset 0x9FB9 4324 bytes