Malicious PDF — malware analysis report

Static analysis result for SHA-256 f8ac39cd74ffa88f…

MALICIOUS

PDF

49.1 KB Created: 2020-09-03 05:25:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 57ad1e7661e40d4eb597dd9459785446 SHA-1: 3b94875709b1ac6f66ba0f954ce1e4138e9c1302 SHA-256: f8ac39cd74ffa88fe488ec22c0469375def42f6694dee2cbf4e65c08d5f52ec0
120 Risk Score

Malware Insights

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

The PDF contains a mass of external links, including a critical redirector link to 'https://ttraff.me/wix?keyword=joining+report+letter+pdf'. This indicates a likely phishing or malware distribution attempt, using the document body text as a lure. The presence of numerous shopify.com links suggests a link farm for SEO poisoning or to obscure the malicious redirector.

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.me/wix?keyword=joining+report+letter+pdf
    • https://cdn.shopify.com/s/files/1/0428/4982/9023/files/1500195388.pdf
    • https://cdn.shopify.com/s/files/1/0427/4801/8855/files/67015944493.pdf
    • https://cdn.shopify.com/s/files/1/0437/7850/6904/files/tupunisiv.pdf
    • https://cdn.shopify.com/s/files/1/0428/8118/8003/files/wewokokunataxijobubudosor.pdf
    • https://cdn.shopify.com/s/files/1/0434/8008/8742/files/chainsaw_mill_guide_diy.pdf
    • https://cdn.shopify.com/s/files/1/0440/8783/6837/files/55266458021.pdf
    • https://cdn.shopify.com/s/files/1/0435/7783/5681/files/65806128676.pdf
    • https://cdn.shopify.com/s/files/1/0437/1339/6901/files/xunesatug.pdf
    • https://cdn.shopify.com/s/files/1/0429/5704/5913/files/fekitidexozoli.pdf
    • https://cdn.shopify.com/s/files/1/0431/2009/9488/files/maryland_sdat_business_search.pdf
    • https://cdn.shopify.com/s/files/1/0431/8543/8884/files/70478639168.pdf
    • https://static.usrfiles.com/ugd/409ca8_7bfd0559205840d5853683233bac120e.pdf
    • https://static.usrfiles.com/ugd/bdeb4c_02d41604fdd94ee69d8445b4854f33fe.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000066b3.bin
b29f9350a720d2da9dc50567d08c4a82684db1fcb28a47e3a5788345b392d808		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66B3 6744 bytes
font_01_sfnt_off00007798.bin
29e157dda2ceaa31ec904579450ee1265da7f4d3ba464f4ddf415f7a138aa2e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7798 4600 bytes
font_02_sfnt_off00008743.bin
a794c602ad7fae3b8a950adde73240c251048ab76777bae1099d65455d8e8569		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8743 9964 bytes
font_03_sfnt_off0000a91f.bin
05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA91F 4324 bytes

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