Malicious PDF — malware analysis report

Static analysis result for SHA-256 bfb9b9c2bfd9e022…

MALICIOUS

PDF

77.4 KB Created: 2020-09-01 14:52:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b6f209292c7007e008e9c1b95c8fcc13 SHA-1: 4779aa7a0f2abd33c699c2d4306cba6c9878d80e SHA-256: bfb9b9c2bfd9e0222439bce7e59cb1b7f1583f6b6af92cb3efd7aeafb00f7596
150 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with one identified as a malicious redirector. The presence of a large link farm suggests an attempt to manipulate search engine results or to distribute malicious content through seemingly benign links. The ML classifier also strongly indicated maliciousness. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=ccna+labs+with+solutions+pdf
    • https://cdn.shopify.com/s/files/1/0432/4353/6541/files/win_win_lottery_result_today.pdf
    • https://cdn.shopify.com/s/files/1/0439/0790/7752/files/osrs_pure_guide_2017.pdf
    • https://cdn.shopify.com/s/files/1/0428/6559/0438/files/vevavune.pdf
    • https://cdn.shopify.com/s/files/1/0431/7410/1149/files/xoxosogifapuxajupari.pdf
    • https://cdn.shopify.com/s/files/1/0434/0432/9125/files/lavasa.pdf
    • https://cdn.shopify.com/s/files/1/0432/1394/7041/files/statistical_methods_by_n._g._das_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0447/0390/7993/files/xexaxisujatibi.pdf
    • https://cdn.shopify.com/s/files/1/0435/0138/7936/files/84339157313.pdf
    • https://cdn.shopify.com/s/files/1/0429/9236/9823/files/44730003448.pdf
    • https://cdn.shopify.com/s/files/1/0434/5089/2454/files/34494900940.pdf
    • https://static.usrfiles.com/ugd/4d6844_58cd1f4f9ba84dd4b87fcd50db0e887e.pdf
    • https://static.usrfiles.com/ugd/24853a_efb8ffb0cfc04edb9e550d402ef50d76.pdf
    • https://static.usrfiles.com/ugd/f0f215_b54880b668ca4653aad5c55222996b22.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_off0000f174.bin
e69d8b63e2c924719286b30cde03650f18476ce98d5a20a8f4dc68de966b4f15		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF174 5284 bytes
font_01_sfnt_off00010377.bin
9ab4d372db3fa1be4dd6b00fda013b00ebc94a66760a4e3fe612b027059c8d2b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10377 11112 bytes

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