Malicious PDF — malware analysis report

Static analysis result for SHA-256 ddaa5e2622aa22fe…

MALICIOUS

PDF

48.0 KB Created: 2020-08-06 18:30:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 94ed8bf4b0039d3a8c75d1dd47706da6 SHA-1: fb985f7d69fdadedad520900c340cd05f3e04994 SHA-256: ddaa5e2622aa22fe43401b44f0a6774861eefb03e6d1f9c17e578cb52b12b7a7
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, with one identified as a malicious redirector. The heuristic PDF_SEO_LINK_FARM indicates a link farm strategy, likely to manipulate search results or distribute malicious content. The primary malicious URL identified is https://ttraff.com/pify?keyword=cambridge+advanced+vocabulary+pdf. 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.com/pify?keyword=cambridge+advanced+vocabulary+pdf
    • http://files.andywilsonmusic.net/uploads/1/3/0/8/130813985/xuvafaninopoju_ratuwuxenote.pdf
    • http://files.tutuadorabow.com/uploads/1/3/0/7/130776451/c750bc541b5cd4.pdf
    • http://files.magiccitybrigade.org/uploads/1/3/2/3/132303270/4311607.pdf
    • https://cdn.shopify.com/s/files/1/0431/0512/4516/files/noxotegunapawubigu.pdf
    • https://cdn.shopify.com/s/files/1/0428/7148/8668/files/3872338625.pdf
    • https://cdn.shopify.com/s/files/1/0432/4337/2699/files/synovial_fluid_analysis.pdf
    • https://cdn.shopify.com/s/files/1/0432/4465/0651/files/palowisari.pdf
    • https://cdn.shopify.com/s/files/1/0451/4558/7877/files/dubai_metro_green_line_map.pdf
    • https://cdn.shopify.com/s/files/1/0429/0733/6863/files/kajanebokogawakemire.pdf
    • https://cdn.shopify.com/s/files/1/0431/7426/4996/files/rexidafana.pdf
    • https://cdn.shopify.com/s/files/1/0431/6522/1028/files/28412319149.pdf
    • https://cdn.shopify.com/s/files/1/0438/4777/8469/files/kisikivopelusa.pdf
    • https://cdn.shopify.com/s/files/1/0431/3127/3365/files/27596942227.pdf
    • https://cdn.shopify.com/s/files/1/0428/1827/3446/files/90805704405.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
stream_005_off0000957e.bin
f9c0d992a1ca6d04488729dc524d8c274884c894ec4608741e8105612fec2109		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x957E 18832 bytes
font_00_sfnt_off00006091.bin
0db467acd7f4eeec86ec450044b489e6ba9a94e4ce7c757703dd6dc1e80d97f5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6091 5504 bytes
font_01_sfnt_off0000733b.bin
e08fd2be8fbceacce3b3afa2c343a89526f6bb4f9569d3f38a098bf76e9b8987		 pdf-font-stream PDF embedded font (sfnt) at offset 0x733B 9976 bytes

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