Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0588e37042600d7…

MALICIOUS

PDF

76.2 KB Created: 2020-08-08 15:48:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3f8189c8fe37cc278f25dc7a8c687cf5 SHA-1: a6b8df5092ae548308c28e21653fdb517048c5e8 SHA-256: c0588e37042600d73ea7c9eef5bda4c01e8854fa5574e58653e176a6b1518329
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on various domains, including a significant number on cdn.shopify.com. One of the embedded links, https://ttraff.com/pify?keyword=alphabet+grec+francais+pdf, is identified as a malicious redirector. This suggests a link farm or SEO poisoning attack designed 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.com/pify?keyword=alphabet+grec+francais+pdf
    • http://files.sandyoppenheimer.com/uploads/1/3/1/6/131636914/lukavivaru.pdf
    • http://mozofuru.self-knowledgeforhumans.com/uploads/1/3/0/9/130969061/kodeziposuridalife.pdf
    • http://files.natashaspeaksrussian.com/uploads/1/3/2/6/132695707/jenijeg.pdf
    • https://cdn.shopify.com/s/files/1/0431/2409/7191/files/javascript_object_length.pdf
    • https://cdn.shopify.com/s/files/1/0437/6287/6565/files/97053486890.pdf
    • https://cdn.shopify.com/s/files/1/0432/2977/3981/files/baguxiwolagoribonap.pdf
    • https://cdn.shopify.com/s/files/1/0437/1654/2632/files/20802300684.pdf
    • https://cdn.shopify.com/s/files/1/0432/5844/5979/files/main_aur_mrs._khanna.pdf
    • https://cdn.shopify.com/s/files/1/0429/4747/7667/files/fufutizaji.pdf
    • https://cdn.shopify.com/s/files/1/0429/2198/4166/files/zeniz.pdf
    • https://cdn.shopify.com/s/files/1/0428/9154/2681/files/57680090865.pdf
    • https://cdn.shopify.com/s/files/1/0432/3845/7501/files/taxuw.pdf
    • https://cdn.shopify.com/s/files/1/0440/6411/2805/files/74911042471.pdf
    • https://cdn.shopify.com/s/files/1/0451/1324/5848/files/pearson_anatomy_and_physiology.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a6f9.bin
bc1031f5ce9319423e87b41e985ea663ba02e2450a386945d7ef537260a0f2d4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA6F9 5544 bytes
font_01_sfnt_off0000b9c9.bin
191ee4e48ac6305750e817d18ab538e21101b091395041c69a47d607028b4bf8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB9C9 25044 bytes
font_02_sfnt_off0000fbae.bin
9f3098539318efb96d669f8cd1fdb4e19ad834056b8526c00d36e87243bd8ff0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFBAE 16388 bytes
font_03_sfnt_off000111aa.bin
23206a3809a93d7a65e30ceee041c4f68ea8060ae9465c6f64f0672d4aa8de18		 pdf-font-stream PDF embedded font (sfnt) at offset 0x111AA 6304 bytes

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