Malicious PDF — malware analysis report

Static analysis result for SHA-256 e418befa1f145383…

MALICIOUS

PDF

42.8 KB Created: 2020-08-05 16:11:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4e366667774417f71534f4e3f51d1e8b SHA-1: 0a7f0a1e931adc1a457cbc11b63f5831b9b8799f SHA-256: e418befa1f145383c2b2c16c884e59d3191a83a759f257fc9d6e1c1c80c99222
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded links, many of which point to external resources, suggesting a link farm or redirection tactic. One prominent URL, 'https://ttraff.ru/pify?keyword=wooden+jewelry+box+plans+pdf', is flagged as a malicious redirector. The document body, though heavily obfuscated, contains this URL and other Shopify links, likely intended to disguise the malicious intent. The primary goal appears to be directing users 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=wooden+jewelry+box+plans+pdf
    • http://files.roundislandlightmichigan.com/uploads/1/3/0/7/130775677/2998554.pdf
    • http://files.mbricktestsite.com/uploads/1/3/1/6/131606392/a24d2279496f119.pdf
    • http://files.everythingmattersfilm.com/uploads/1/3/2/7/132711970/4b3d653efbb1.pdf
    • http://files.five4him.com/uploads/1/3/1/4/131406606/653a4.pdf
    • https://cdn.shopify.com/s/files/1/0436/0581/9550/files/terumul.pdf
    • https://cdn.shopify.com/s/files/1/0430/3729/4745/files/13309240511.pdf
    • https://cdn.shopify.com/s/files/1/0437/7962/1026/files/55701855086.pdf
    • https://cdn.shopify.com/s/files/1/0436/0408/2851/files/41711162383.pdf
    • https://cdn.shopify.com/s/files/1/0448/4261/4946/files/creative_writing_noun.pdf
    • https://cdn.shopify.com/s/files/1/0435/1534/7103/files/69727706778.pdf
    • https://cdn.shopify.com/s/files/1/0432/3724/5086/files/80264561990.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/280680.pdf
    • https://cdn.shopify.com/s/files/1/0429/3846/6467/files/kijizijofekab.pdf
    • https://cdn.shopify.com/s/files/1/0431/5352/2850/files/building_materials_and_construction_book_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/4153/7696/files/11866997111.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/koxumugude.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_off0000686f.bin
54210c9ef9d08e56c990d0e16b65e0b881156d8b5156a4bf7e9c1a5a3eabbc92		 pdf-font-stream PDF embedded font (sfnt) at offset 0x686F 5528 bytes
font_01_sfnt_off00007b6a.bin
fe956cbe4b820f3160183b911ffe0db5e7d0cdeea0dc28a9313ae5c3350137ba		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B6A 10268 bytes

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