Malicious PDF — malware analysis report

Static analysis result for SHA-256 83142b72007d43df…

MALICIOUS

PDF

58.7 KB Created: 2020-09-01 10:05:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 41b29e044621a837de54f448af54e3f0 SHA-1: 6ee6b0e7f16b01e1d4e337d09335432a9768f87e SHA-256: 83142b72007d43dfc18c79a52063710cb9b148302e70793b51339fe4e953df4c
120 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 heuristic specifically flagging it as a PDF SEO link farm. The primary malicious URL, https://ttraff.ru/wix?keyword=amn%25C3%25A9sie+globale+transitoire+pdf, is identified as a malicious redirector. While many other links point to benign Shopify domains, the presence of the malicious redirector and the sheer volume of links suggest an attempt to manipulate search results or lure users to malicious sites.

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/wix?keyword=amn%25C3%25A9sie+globale+transitoire+pdf
    • https://cdn.shopify.com/s/files/1/0446/9525/7244/files/ketogenic_diet_cookbook.pdf
    • https://cdn.shopify.com/s/files/1/0431/8117/9048/files/webimabisakejibidizes.pdf
    • https://cdn.shopify.com/s/files/1/0432/4841/8971/files/35832069429.pdf
    • https://cdn.shopify.com/s/files/1/0431/9235/2932/files/52111344190.pdf
    • https://static.usrfiles.com/ugd/b8c837_94a734d428014021b55e1f01f855b377.pdf
    • https://static.usrfiles.com/ugd/cb2bed_38ac89c61f4f406fbb5a05a3a4080ebe.pdf
    • https://cdn.shopify.com/s/files/1/0430/3778/6265/files/7499838385.pdf
    • https://cdn.shopify.com/s/files/1/0429/1438/1980/files/3506762450.pdf
    • https://cdn.shopify.com/s/files/1/0432/0909/7376/files/feb_2020_calendar_kalnirnay.pdf
    • https://cdn.shopify.com/s/files/1/0430/6888/3098/files/pokaw.pdf
    • https://static.usrfiles.com/ugd/253000_d34ff018a7d943ab8967cfecf4dacbc7.pdf
    • https://static.usrfiles.com/ugd/60933b_77fcec347fa5491db07c377c48a615da.pdf
    • https://static.usrfiles.com/ugd/5926b4_f5de70415c4448b3a7b03e73af995a38.pdf
    • https://static.usrfiles.com/ugd/b8c837_fc303731d6eb4686ac276f30f5750e27.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_off0000a177.bin
4cc574bb01330e3c0c1aba9ffeaf026900ead41f51b1162082d2e6fb075bf8c3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA177 5632 bytes
font_01_sfnt_off0000b43d.bin
c995681c5165dac8d4365d2970ea4930020803b5a864cade1a547385033e82a7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB43D 12868 bytes

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