Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2a4ad6d6e21bc4d…

MALICIOUS

PDF

74.0 KB Created: 2020-08-05 05:54:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3c4ab94b9f66f2908bc9f9173a1f0c43 SHA-1: 6ae446ae88c5f05c30e46439f58bbdf4d23a2765 SHA-256: c2a4ad6d6e21bc4d9412fdda78f9fe498770107c3c99f61d46dc22d543944143
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic identifying a link to a known malicious redirector. The document body, though heavily obfuscated, contains the URL that is also flagged by the heuristic. This suggests the primary goal is to redirect the user to malicious infrastructure, likely for further exploitation or phishing. The presence of a large number of links to external PDFs, many hosted on shopify.com, indicates a link farm or SEO poisoning tactic to disguise the malicious redirect.

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=complex+sql+queries+with+examples+pdf
    • http://files.plantwisdomgardencenter.com/uploads/1/3/2/3/132303406/ratorumatulag.pdf
    • http://files.clwindowwashing.com/uploads/1/3/0/8/130873717/gevorisutile-wamip-puduzoj.pdf
    • http://files.aattribut.com/uploads/1/3/2/6/132680908/2001955.pdf
    • http://files.wingettweddings.com/uploads/1/3/1/1/131164488/129068.pdf
    • https://cdn.shopify.com/s/files/1/0432/8721/6293/files/goldstein_classical_mechanics_solutions.pdf
    • https://cdn.shopify.com/s/files/1/0429/6802/3194/files/jetekonuwavixutaronem.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nisexabidubukov.pdf
    • https://cdn.shopify.com/s/files/1/0432/6716/2276/files/36124691889.pdf
    • https://cdn.shopify.com/s/files/1/0432/3206/7739/files/dagixejakaripigajena.pdf
    • https://cdn.shopify.com/s/files/1/0431/7950/7872/files/genapujoxuzelemudid.pdf
    • https://cdn.shopify.com/s/files/1/0430/8025/3593/files/85527211136.pdf
    • https://cdn.shopify.com/s/files/1/0435/6843/1265/files/35999454318.pdf
    • https://cdn.shopify.com/s/files/1/0431/4382/3511/files/bezufidomutovilemeseveguw.pdf
    • https://cdn.shopify.com/s/files/1/0432/3786/7680/files/62830445984.pdf
    • https://cdn.shopify.com/s/files/1/0435/0056/8736/files/gelogepazawumukoz.pdf
    • https://cdn.shopify.com/s/files/1/0431/8419/3697/files/8848198784.pdf
    • https://cdn.shopify.com/s/files/1/0430/0275/7281/files/9774571865.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/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d5fa.bin
2014dcf4738867dfe28ad642d90a34970a32859416e55e4ecf674e362efc3b24
pdf-font-stream PDF embedded font (sfnt) at offset 0xD5FA 5472 bytes
font_01_sfnt_off0000e87a.bin
8598bf17c4ab9f690311eb7be4832cbf8ce6b520590fdea3bd5be50199303ded
pdf-font-stream PDF embedded font (sfnt) at offset 0xE87A 16040 bytes