Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0c57a50814736c0…

MALICIOUS

PDF

50.9 KB Created: 2020-07-29 05:39:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 806a0d1e3ec4237667feeead6c8a5a39 SHA-1: ec13f504688d7b0c27ae858cd5e524668d649cfe SHA-256: b0c57a50814736c0380d364a53230e6ca2c4b69f3de1d676d1558c7e8ca3f1c1
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to SEO-optimized PDF files hosted on various domains. One of the primary links redirects to a known malicious redirector. This indicates a likely attempt to lure users to malicious content through a link farm, potentially for phishing or malware distribution.

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=charles%20taylor%20malaise%20of%20modernity%20pdf
    • http://files.tiffanywhalen.com/uploads/1/3/0/7/130775379/pizala_jovupobaweb_puvazaputixo.pdf
    • http://files.theparkatsouthwood.net/uploads/1/3/0/7/130738850/sitagurivapux_xozubet_xufetuseges.pdf
    • http://files.stonefoundationproperties.com/uploads/1/3/0/7/130775974/vutalo-kagaxibapo.pdf
    • http://files.drstephanisko.com/uploads/1/3/0/8/130814200/9b527bc61ccd.pdf
    • http://files.vinesband.info/uploads/1/3/1/4/131483184/tewifajo_kazesuteloliguz_romenatixiz_bezunejopunafal.pdf
    • http://files.theparkatsouth
    • https://cdn.shopify.com/s/files/1/0431/7010/3452/files/sojofiriravevijogavi.pdf
    • https://cdn.shopify.com/s/files/1/0432/7754/9728/files/pikodirowuzoti.pdf
    • https://cdn.shopify.com/s/files/1/0435/2029/5064/files/84392311041.pdf
    • https://cdn.shopify.com/s/files/1/0432/9386/8187/files/49668227310.pdf
    • https://cdn.shopify.com/s/files/1/0431/2776/7206/files/pewimuronejit.pdf
    • https://cdn.shopify.com/s/files/1/0430/0813/1233/files/31311237560.pdf
    • https://cdn.shopify.com/s/files/1/0427/6197/8023/files/28260544994.pdf
    • https://cdn.shopify.com/s/files/1/0429/5668/5468/files/zinemovuvawa.pdf
    • https://cdn.shopify.com/s/files/1/0429/8565/2375/files/xifosikalulip.pdf
    • https://cdn.shopify.com/s/files/1/0433/5144/1560/files/diriferusopi.pdf
    • https://cdn.shopify.com/s/files/1/0433/0032/3478/files/bumisaligufewidikit.pdf
    • https://cdn.shopify.com/s/files/1/0430/3313/3209/files/letube.pdf
    • https://cdn.shopify.com/s/files/1/0437/6834/8830/files/xarisitiwubavivapifag.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_off00008c28.bin
50493a9cfd391b22cca4c17132b75652090f254346a8d242ff18c6a4b122796b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8C28 5196 bytes
font_01_sfnt_off00009db3.bin
d7720105a55f02d7ddd46c70ef2ff0111ca2cf350e976e11d197e238f4b87746		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9DB3 9484 bytes

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