Malicious PDF — malware analysis report

Static analysis result for SHA-256 af7753f9f1fc94fb…

MALICIOUS

PDF

46.4 KB Created: 2020-07-29 06:39:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8de2606e4e82833483e5afea550599be SHA-1: 00e046798c3f360258f0b98cb127f0cb94238dda SHA-256: af7753f9f1fc94fbcf213f58e18d0e59cd5435a9435e08692c1e52f942041e17
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 Shopify domains, forming a link farm. One critical heuristic identified a link to a known malicious redirector at 'ttraff.ru'. The document body, though heavily obfuscated, appears to be a lure related to 'Arizona business management study guide'. The combination of a link farm and a malicious redirector suggests an attempt 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.ru/pify?keyword=arizona+business+management+study+guide
    • http://files.stellamakes.com/uploads/1/3/2/8/132815791/6ba79ff1d.pdf
    • http://files.laurabain.com.au/uploads/1/3/2/8/132815342/jevotiwa.pdf
    • http://files.7thgradescienceworld.com/uploads/1/3/0/8/130813144/kagawan.pdf
    • http://files.7thgradescienceworld.com/uploads/1/3/0/8/130813144/kagaw
    • https://cdn.shopify.com/s/files/1/0429/0586/2307/files/nuxusomezunivi.pdf
    • https://cdn.shopify.com/s/files/1/0435/6787/4207/files/lepitukulalokezedufupij.pdf
    • https://cdn.shopify.com/s/files/1/0430/1540/5725/files/53430780671.pdf
    • https://cdn.shopify.com/s/files/1/0437/8158/7095/files/19956317449.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/72274594547.pdf
    • https://cdn.shopify.com/s/files/1/0431/3343/6055/files/dovubiliredexu.pdf
    • https://cdn.shopify.com/s/files/1/0437/7552/5022/files/17746100939.pdf
    • https://cdn.shopify.com/s/files/1/0431/0876/1751/files/41329829451.pdf
    • https://cdn.shopify.com/s/files/1/0428/0087/3631/files/gijivopu.pdf
    • https://cdn.shopify.com/s/files/1/0430/0642/7299/files/33004032258.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/marifurozijuzaledenikegi.pdf
    • https://cdn.shopify.com/s/files/1/0429/2637/5071/files/filibodojegavubi.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_off0000761d.bin
1d0a5c37e8a27be2b4b7169ee7338ef0d1ba3e94e425271f4f573187eaadbf1e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x761D 5276 bytes
font_01_sfnt_off000087fa.bin
e7acf02540d340f64353cd9c55fa267b11c86a4dff815567fd18ab250a1f3f90		 pdf-font-stream PDF embedded font (sfnt) at offset 0x87FA 10688 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.