Malicious PDF — malware analysis report

Static analysis result for SHA-256 996d5093c4e349ce…

MALICIOUS

PDF

49.4 KB Created: 2020-08-26 21:01:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6328809911bb48abb1be0e121f5756ee SHA-1: c17b0a0f2622c1d1842a8bf698942a0a67f27a94 SHA-256: 996d5093c4e349ce6395fab68b4c49cc0055f1157da2df6306b1e2071103576c
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many pointing to Shopify domains, but one critical link redirects to a known malicious infrastructure at 'ttraff.ru'. This suggests a link farm or SEO poisoning technique used to lure victims to a malicious site under the guise of providing technical documentation. No scripts were extracted, and the document body is heavily corrupted, but the presence of the malicious redirector is a strong indicator of malicious intent.

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=advanced+pl+sql+interview+questions+and+answers+pdf
    • http://files.theathomeexperience.com/uploads/1/3/1/3/131384286/7988815.pdf
    • http://tatimogiv.mpspto.com/uploads/1/3/2/8/132814930/sosoxetatesor-tavoxibemufem-vedupux.pdf
    • http://sisixi.journeys4life.com/uploads/1/3/1/4/131410299/2137800.pdf
    • http://files.dynamiteimageky.com/uploads/1/3/1/0/131071067/a094a298abcaa.pdf
    • http://zamiwabo.tipsyglasswinery.com/uploads/1/3/2/7/132740829/4b7cb0f7ddc829a.pdf
    • https://cdn.shopify.com/s/files/1/0439/4686/8891/files/lojozozeluferon.pdf
    • https://cdn.shopify.com/s/files/1/0460/4185/8212/files/lokoseterudupagagi.pdf
    • https://cdn.shopify.com/s/files/1/0429/8804/4442/files/welolemulefut.pdf
    • https://cdn.shopify.com/s/files/1/0435/4356/0346/files/zovajo.pdf
    • https://cdn.shopify.com/s/files/1/0431/2779/9957/files/definicion_de_analisis_financiero.pdf
    • https://cdn.shopify.com/s/files/1/0434/8103/9013/files/sebupazufusip.pdf
    • https://cdn.shopify.com/s/files/1/0428/7266/8319/files/semezipab.pdf
    • https://cdn.shopify.com/s/files/1/0438/1717/3149/files/13731415885.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wopeg.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006ec9.bin
ea6f872d7dc210281f8ae0113632449d49924099ddce43e0d4909e541cedcac1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6EC9 5300 bytes
font_01_sfnt_off000080e9.bin
624b41803a5befae35e8af5bebbd6837008c57a6d3347e17adec281cdff30ada		 pdf-font-stream PDF embedded font (sfnt) at offset 0x80E9 12936 bytes
font_02_sfnt_off0000aa35.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAA35 4324 bytes

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