Malicious PDF — malware analysis report

Static analysis result for SHA-256 e55aa0d21f67c5f5…

MALICIOUS

PDF

37.3 KB Created: 2020-09-02 07:12:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 572196f430c2ab0b20227e391520795d SHA-1: 117ea8f3801481c878431886978db4ae7ebc6bc7 SHA-256: e55aa0d21f67c5f5be3a05b5d412f58e99051e66ada93badf11c4a7d697ea155
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/wix?keyword=crocs+clogs+size+guide'. This indicates the document is designed to lure users to a malicious site. Additionally, the PDF exhibits characteristics of a link farm, with numerous embedded links, many pointing to benign Shopify URLs, but the primary redirector is clearly malicious. No scripts were extracted from this sample.

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.com/wix?keyword=crocs+clogs+size+guide
    • https://cdn.shopify.com/s/files/1/0430/3486/9909/files/volkswagen_workshop_manuals_golf_mk7.pdf
    • https://cdn.shopify.com/s/files/1/0431/1095/7210/files/65778424984.pdf
    • https://cdn.shopify.com/s/files/1/0434/4630/4920/files/dixaweporiwapede.pdf
    • https://cdn.shopify.com/s/files/1/0428/6650/7942/files/37490118765.pdf
    • https://cdn.shopify.com/s/files/1/0437/2883/0632/files/track_android_phone_using_imei_number.pdf
    • https://cdn.shopify.com/s/files/1/0432/3645/8654/files/13459192154.pdf
    • https://cdn.shopify.com/s/files/1/0429/5062/3385/files/vener.pdf
    • https://cdn.shopify.com/s/files/1/0431/1557/7504/files/fevotifofofen.pdf
    • https://cdn.shopify.com/s/files/1/0431/1390/6333/files/92920651018.pdf
    • https://cdn.shopify.com/s/files/1/0437/4321/5767/files/26356917204.pdf
    • https://static.usrfiles.com/ugd/6a4619_34ee94084d434920b4f525d308525207.pdf
    • https://static.usrfiles.com/ugd/b8c837_25ac3e0f25bb42f1a1fc6501181d2e5f.pdf
    • https://static.usrfiles.com/ugd/6290de_d1abfb608b0f43a7bc5148c7da8ff5c8.pdf
    • https://static.usrfiles.com/ugd/ee6100_e385612db6e44ec8bd38e72f770ccca7.pdf
    • https://static.usrfiles.com/ugd/585b1d_4982c2cf7a8e46358b40d6bea8aa770d.pdf
    • https://cdn.shopify.com/s/files/1/0429/5085/2762/files/catalogo_hinode_em.pdf
    • https://cdn.shopify.com/s/files/1/0433/8014/6334/files/konudujidufivulubiwu.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_off00005537.bin
01dd6259af1d66bc196bdcebb4ee116e258f291cf964cd7f375b19c319dbe074		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5537 4852 bytes
font_01_sfnt_off000065cb.bin
f7562b695fbafdaf0e2d89a0a8750ad0e19adae3f74f35b2206eef97fd306acb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65CB 10200 bytes

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