Malicious PDF — malware analysis report

Static analysis result for SHA-256 9084490fa1f3209c…

MALICIOUS

PDF

35.2 KB Created: 2020-08-26 01:58:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 492f1d930a5ddb60812ac32dd3c09bd2 SHA-1: a3a38bf581efe4ae55899dbb99214ff1e73a0756 SHA-256: 9084490fa1f3209c66be3d25345fcd90d1b071c1fe4534a752744e7ed7411507
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, identified as a PDF link farm. One of these links, 'https://ttraff.com/pify?keyword=who+makes+the+best+mattress', is flagged as a malicious redirector. The document body, though partially corrupted, contains text related to mattress reviews, suggesting a lure to disguise the malicious intent. The file's purpose appears to be directing users to malicious infrastructure through a deceptive link.

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=who+makes+the+best+mattress
    • http://files.brusi.it/uploads/1/3/1/3/131398091/f951e33b.pdf
    • http://files.rgilles4fse100.org/uploads/1/3/0/8/130874284/425293.pdf
    • http://files.geowingmapping.com/uploads/1/3/1/6/131637876/vazawebufejev.pdf
    • http://files.daydreamphotographybykatherineweeks.com/uploads/1/3/0/8/130814682/1202566.pdf
    • http://files.windersonscreations.com/uploads/1/3/1/4/131406082/5184639.pdf
    • https://cdn.shopify.com/s/files/1/0428/5346/6271/files/97801307476.pdf
    • https://cdn.shopify.com/s/files/1/0431/8799/4792/files/rowobutogit.pdf
    • https://cdn.shopify.com/s/files/1/0430/8058/1274/files/61250185434.pdf
    • https://cdn.shopify.com/s/files/1/0436/8531/4715/files/what_is_composition_in_java.pdf
    • https://cdn.shopify.com/s/files/1/0434/2890/5127/files/mimugumalesa.pdf
    • https://cdn.shopify.com/s/files/1/0463/6796/5339/files/60914865886.pdf
    • https://cdn.shopify.com/s/files/1/0428/2476/1507/files/janepaz.pdf
    • https://cdn.shopify.com/s/files/1/0436/8374/1849/files/76047875637.pdf
    • https://cdn.shopify.com/s/files/1/0430/6409/8970/files/pigunidozudirenimaxiwuru.pdf
    • https://cdn.shopify.com/s/files/1/0433/5534/0954/files/xofawotu.pdf
    • https://cdn.shopify.com/s/files/1/0427/9851/4343/files/jenolunimowosipakotut.pdf
    • https://cdn.shopify.com/s/files/1/0433/4606/7605/files/jebamuxitapedoxoto.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_off00004b8f.bin
02ebd87c714d77b08a8bc1c910243c447702e594770098b651596fe51f64dc47		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4B8F 5108 bytes
font_01_sfnt_off00005cd2.bin
2f13a7faaa189348e61099a821f4cfeae19d5e67b6daae0c5bd85cff35d3232d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CD2 10388 bytes

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