Malicious PDF — malware analysis report

Static analysis result for SHA-256 a14a43099fb0febc…

MALICIOUS

PDF

52.2 KB Created: 2020-07-09 05:53:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 589c36562dcd00dd48b0d626a77c7463 SHA-1: 4b6d9642e109a1650d1e58d0313114124df01a74 SHA-256: a14a43099fb0febc9a1a3cd12be7ef76bf32268e738e52cfe92e892360e840be
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external PDF files hosted on various domains. One of the primary links redirects to a malicious URL, suggesting a link farm or SEO poisoning attack. The document body, though heavily obfuscated, contains keywords related to recipes and the PDF creation tool, likely intended to improve search engine ranking for malicious links.

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/wb?keyword=gobi%20manchurian%20gravy%20recipe%20in%20malayalam%20pdf
    • http://files.stampgeneral.com/uploads/1/3/1/4/131483371/9747911.pdf
    • http://files.iorinishioka.com/uploads/1/3/2/3/132303239/4539972.pdf
    • http://files.gogovernors.com/uploads/1/3/1/4/131406762/6528224.pdf
    • http://files.cozykidsembroidery.com/uploads/1/3/1/4/131409170/ninebafakafekip.pdf
    • http://files.termarkleather.com/uploads/1/3/2/6/132682665/85b01c3aa355523.pdf
    • http://files.microartldn.com/uploads/1/3/0/7/130776640/rotorizox.pdf
    • http://files.marzipan-media.com/uploads/1/3/1/8/131856184/7584706.pdf
    • http://files.kalbarrigolf.com.au/uploads/1/3/1/4/131437362/8ee31fb3.pdf
    • http://files.artandroulla.com/uploads/1/3/1/3/131380773/6e51b943ebb202b.pdf
    • https://fojajuxebi.files.wordpress.com/2020/06/80549852824.pdf
    • https://kopokugol.files.wordpress.com/2020/06/93190291252.pdf
    • https://moluvezodox.files.wordpress.com/2020/06/46169015689.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/43778875991.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/99913566500.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/28391359898.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/76957488457.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mulobovapu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vuxopikuxoxixu.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nasodidupafulad.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/
    • https://cdn.shopify.com/s/fil

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006831.bin
bf85ca19b2df6c2a77c87a816c6fdb3e67d75602acaa3f5e22981019d3e5686d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6831 5524 bytes
font_01_sfnt_off00007abf.bin
df849e33976c689e27b590220982f510f4285b9a52aba1a9e24868e6166788ed		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7ABF 5480 bytes
font_02_sfnt_off00008ebb.bin
bc009812a1b9b5ee68c8e8704c041aa266e539f218f7fb2a34338e6273750d98		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8EBB 9960 bytes
font_03_sfnt_off0000b0cf.bin
a21abca5ff19d3336e7e6cb646c407ca8beacd1a34a9fbaf277cce0230678c7e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB0CF 4144 bytes

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