Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f6ea8fc54c0e2d1…

MALICIOUS

PDF

40.1 KB Created: 2020-08-18 20:09:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 31a73500c800fc2ef403bf5373181b93 SHA-1: 9ebd9e4eebda9953e91f1a94ac87e376c5774465 SHA-256: 4f6ea8fc54c0e2d123a554fcfd3a626c4d8a50552acc80c8fa65390c66292966
128 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with many links pointing to Shopify domains and one critical link to a known malicious redirector at ttraff.ru. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=altova+xmlspy++for+mac', suggesting a lure for software downloads that redirects to malicious infrastructure. No scripts were extracted from this sample.

Heuristics 4

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=altova+xmlspy++for+mac
    • http://files.jamarkllc.com/uploads/1/3/1/3/131383251/zesimizerimag.pdf
    • https://cdn.shopify.com/s/files/1/0437/7106/8577/files/admiravel_mundo_novo_resumo.pdf
    • https://cdn.shopify.com/s/files/1/0430/3467/3305/files/pivemeromituladozijom.pdf
    • https://cdn.shopify.com/s/files/1/0433/6405/7238/files/lojamubetateretixadomejax.pdf
    • https://cdn.shopify.com/s/files/1/0432/6113/2968/files/morunevak.pdf
    • https://cdn.shopify.com/s/files/1/0434/0062/6341/files/juleruti.pdf
    • https://cdn.shopify.com/s/files/1/0433/0595/9574/files/23262311475.pdf
    • https://cdn.shopify.com/s/files/1/0437/1021/8391/files/24276551188.pdf
    • https://cdn.shopify.com/s/files/1/0435/2599/6698/files/94068451877.pdf
    • https://cdn.shopify.com/s/files/1/0432/7673/0533/files/sap_implementation_guide_download.pdf
    • https://cdn.shopify.com/s/files/1/0433/8463/5544/files/semajikovobanewiso.pdf
    • https://cdn.shopify.com/s/files/1/0431/5496/4629/files/duzisapix.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_off00005d33.bin
19492f3b0b8af31211c5b2ea31bece8d37eb423ec1966911414bd2a9cb7c848a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D33 5380 bytes
font_01_sfnt_off00006f7c.bin
574e5490513fca155503a01d81a52c9f68e9c76b05db1f1f54919d01e4f44154		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F7C 11172 bytes

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