Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6c93227611f90e5…

MALICIOUS

PDF

43.6 KB Created: 2020-08-23 00:25:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6c159e3ff9c11b29ecba373a3d1a9499 SHA-1: acc7ba6057a1ba00a02675cc51a3d2bc758d9c5e SHA-256: d6c93227611f90e539ad2d23ef96e8555191a270a017a891b35aaa1894c3fe54
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, many of which point to a link farm hosted on cdn.shopify.com. One of the primary links, 'https://ttraff.cc/pify?keyword=baby+photo++apps', is identified as a malicious redirector. The document body, though heavily obfuscated, contains references to this URL and other PDF files, suggesting a social engineering lure to drive traffic to malicious infrastructure.

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.cc/pify?keyword=baby+photo++apps
    • http://files.motherwilsonswisewords.com/uploads/1/3/1/6/131636914/6413027.pdf
    • http://files.paleysmarket.com/uploads/1/3/0/7/130739678/foxaxananozino.pdf
    • http://munox.jamrockjerkny.com/uploads/1/3/1/4/131437425/462108.pdf
    • http://pagexijil.nollmannlab.org/uploads/1/3/0/9/130969264/4506723.pdf
    • https://cdn.shopify.com/s/files/1/0432/1912/4382/files/6922445239.pdf
    • https://cdn.shopify.com/s/files/1/0437/6631/7205/files/phylum_ctenophora.pdf
    • https://cdn.shopify.com/s/files/1/0429/7723/1007/files/62889822806.pdf
    • https://cdn.shopify.com/s/files/1/0427/7328/2983/files/ffmpeg_mp3_to_wav.pdf
    • https://cdn.shopify.com/s/files/1/0430/8808/5145/files/zulojokomajemuzogefowewi.pdf
    • https://cdn.shopify.com/s/files/1/0433/8984/5667/files/avast_antivirus_1_year_protection_free.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/31082235151.pdf
    • https://cdn.shopify.com/s/files/1/0432/7325/7118/files/bumem.pdf
    • https://cdn.shopify.com/s/files/1/0436/4258/5241/files/biblical_theology_in_the_life_of_the_church.pdf
    • https://cdn.shopify.com/s/files/1/0462/7457/6533/files/15033680366.pdf
    • https://cdn.shopify.com/s/files/1/0429/8863/4263/files/10474772777.pdf
    • https://cdn.shopify.com/s/files/1/0431/6463/1195/files/vuziraromafo.pdf
    • https://cdn.shopify.com/s/files/1/0430/3277/2757/files/gekim.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_off00006d1e.bin
7b9c99a69c1016e8609083a99267de10d361eccd4199dd57d658625b880078e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D1E 5072 bytes
font_01_sfnt_off00007e5a.bin
51d737ed5d4a3d7751c449ebeeb61ed314591302628397b43076d114939b1c9c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E5A 10352 bytes

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