Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba1c71ad3a999aaf…

MALICIOUS

PDF

38.3 KB Created: 2020-08-10 20:22:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8aa0eb3b22693cb2be4f8ca7303cabd7 SHA-1: 599b46e42c63ef83cc364f6f831eddafb593f207 SHA-256: ba1c71ad3a999aafeab3d514219d0461456eee3f78d5a9d143038989a7bffb64
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links to external PDF files, a technique often used for SEO manipulation or to host malicious content. One of the primary links points to a known malicious redirector. The document body itself is largely unreadable binary data, but the presence of the redirector URL and the mass of external links strongly suggest a malicious intent, likely to lure users to malicious sites or download further payloads.

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.cc/pify?keyword=sensory+details+chart+pdf
    • http://files.lesliepalmerfineart.com/uploads/1/3/1/6/131606284/6896453.pdf
    • http://files.magdalenecarmen.com/uploads/1/3/1/3/131380845/xijujobagonof_bibos_sesona_zonoso.pdf
    • http://fuzuwepif.partnerstkd.com/uploads/1/3/1/1/131164250/pekimok.pdf
    • http://bikasegop.myerswoodshop.com/uploads/1/3/0/8/130873851/lixemazuk.pdf
    • https://cdn.shopify.com/s/files/1/0432/8649/5396/files/wirinegifetufumunemoraxor.pdf
    • https://cdn.shopify.com/s/files/1/0431/0115/9585/files/59505955216.pdf
    • https://cdn.shopify.com/s/files/1/0433/4164/3941/files/36157492656.pdf
    • https://cdn.shopify.com/s/files/1/0430/6314/8706/files/noguguv.pdf
    • https://cdn.shopify.com/s/files/1/0431/3173/2122/files/27391234041.pdf
    • https://cdn.shopify.com/s/files/1/0432/7076/6750/files/23578096191.pdf
    • https://cdn.shopify.com/s/files/1/0437/9249/8850/files/88124042507.pdf
    • https://cdn.shopify.com/s/files/1/0432/0460/8155/files/71827035237.pdf
    • https://cdn.shopify.com/s/files/1/0435/9330/2178/files/45632045535.pdf
    • https://cdn.shopify.com/s/files/1/0433/8935/4149/files/good_snacks_for_diabetics.pdf
    • https://cdn.shopify.com/s/files/1/0427/9749/8535/files/fulakugozuv.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_off00005892.bin
615feccdbcd4c5d74b4f9797628fd2766404c44a42356252e5e76b86536578ee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5892 5448 bytes
font_01_sfnt_off00006b15.bin
2925494c69a7ed6196b1222a6c9a9ddff782af2f2511990b91ecd0b06ab4e169		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B15 9900 bytes

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