Malicious PDF — malware analysis report

Static analysis result for SHA-256 c742bd7799886627…

MALICIOUS

PDF

48.4 KB Created: 2020-07-28 19:02:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4172b943b3405116bf264bed5c1eeea0 SHA-1: 7c9954b3e465c31f1d0cc147a0b31d2903c91ef9 SHA-256: c742bd7799886627b1fccd5c2f426a91204865d2dae33e5e08b015e8517db69f
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 a critical heuristic firing for a PDF link farm. One of the primary links points to a known malicious redirector infrastructure. The document body is heavily obfuscated and does not provide clear textual clues, but the heuristic findings strongly suggest a malicious intent related to link manipulation and redirection.

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/wb?keyword=tika%20extract%20images%20from%20pdf%20python
    • http://files.christopherkazantzis.com/uploads/1/3/1/3/131379899/junagebalazur.pdf
    • http://files.vserottweilers.com/uploads/1/3/0/8/130814586/6869903.pdf
    • http://files.chantal-pollier.com/uploads/1/3/1/4/131482916/pewulefimope.pdf
    • https://cdn.shopify.com/s/files/1/0431/5011/4978/files/boniwexusuxatavumaduwov.pdf
    • https://cdn.shopify.com/s/files/1/0433/4492/0734/files/zuluxavetipowasedira.pdf
    • https://cdn.shopify.com/s/files/1/0428/0041/4883/files/223363937.pdf
    • https://cdn.shopify.com/s/files/1/0431/5162/2306/files/72298064489.pdf
    • https://cdn.shopify.com/s/files/1/0433/8001/5262/files/1777076264.pdf
    • https://cdn.shopify.com/s/files/1/0428/7725/5836/files/41516732249.pdf
    • https://cdn.shopify.com/s/files/1/0429/8535/7463/files/27298518261.pdf
    • https://cdn.shopify.com/s/files/1/0435/4323/2661/files/92202168733.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xibirinadinabamagumib.pdf
    • https://cdn.shopify.com/s/files/1/0427/8861/8396/files/fugomuwekikamodeluseg.pdf
    • https://cdn.shopify.com/s/files/1/0431/3445/1874/files/kebexipefatosegalukukamuv.pdf
    • https://cdn.shopify.com/s/files/1/0428/9685/1111/files/64180177398.pdf
    • https://cdn.shopify.com/s/files/1/0431/1790/4033/files/rojawoxegelakegedubeme.pdf
    • https://cdn.shopify.com/s/files/1/0427/8488/2844/files/sumudimo.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/files/1/0428/0041/4883/files/22

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000792e.bin
8cc3b783b87caea649d64e0dbdb53322e22b7a9bdd9bfac2ea866803b69f4a38		 pdf-font-stream PDF embedded font (sfnt) at offset 0x792E 5508 bytes
font_01_sfnt_off00008bca.bin
446f9856b871867174f7bc2d9ceb50d0446693f73ad1a8a55586b4c1efeada55		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8BCA 12288 bytes

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