Malicious PDF — malware analysis report

Static analysis result for SHA-256 e2dfbedc152a3b55…

MALICIOUS

PDF

44.5 KB Created: 2020-07-28 15:05:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 78c96499f3ba28ad115693471589f05b SHA-1: 705910739a3efceac20f3d65fd5507fc6f35ee46 SHA-256: e2dfbedc152a3b55edb9e734331ac29e23142c010d13bff2dc9ef874c7047453
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, identified as a link farm, with the primary URL pointing to a known malicious redirector. The document body, though heavily obfuscated, suggests a lure related to 'chemical examples pdf'. The heuristic firings indicate the PDF is designed to redirect users to malicious infrastructure, likely 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.ru/pify?keyword=enlaces+quimicos+ejemplos+pdf
    • http://files.beaumonttennisacademy.com/uploads/1/3/0/7/130776812/2996223.pdf
    • http://files.janson-fit.com/uploads/1/3/1/6/131606408/mozowej.pdf
    • http://files.dandjgypcrete.com/uploads/1/3/0/8/130814209/8178598.pdf
    • https://cdn.shopify.c
    • https://cdn.shopify.com/s/files/1/0433/2870/0571/files/88904255951.pdf
    • https://cdn.shopify.com/s/files/1/0427/7898/4614/files/95041240879.pdf
    • https://cdn.shopify.com/s/files/1/0429/5429/3402/files/xajelejumunavotavule.pdf
    • https://cdn.shopify.com/s/files/1/0435/7101/9935/files/87623176292.pdf
    • https://cdn.shopify.com/s/files/1/0429/6838/3641/files/28351300377.pdf
    • https://cdn.shopify.com/s/files/1/0428/1729/0407/files/fipelugesipovu.pdf
    • https://cdn.shopify.com/s/files/1/0432/8331/6891/files/ritosorumosedo.pdf
    • https://cdn.shopify.com/s/files/1/0432/6470/4662/files/rimawoxajovugananetujidi.pdf
    • https://cdn.shopify.com/s/files/1/0428/6775/3116/files/zigilinikimis.pdf
    • https://cdn.shopify.com/s/files/1/0436/6322/9078/files/luvipimefoka.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_off00006d08.bin
79cf602fbd9a5cf419763428608fb6021b5bc8f78a157a0389fef1f7b1b9c225		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D08 5168 bytes
font_01_sfnt_off00007e7f.bin
0db5d9bb00a68c0a0e00cd718b33fb17ea27e08ea04d59cfda3cce9a8f9890a3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E7F 11404 bytes

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