Malicious PDF — malware analysis report

Static analysis result for SHA-256 39eb074d85864aa3…

MALICIOUS

PDF

48.1 KB Created: 2020-08-08 04:57:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 62df00a487049bbfbfe6c057510d11fe SHA-1: cbd703714e9d3cffc59e20babf3904d74101361b SHA-256: 39eb074d85864aa3078c781041a7272312753c7ec171f511d14d3291a79c365c
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 Shopify domains, but one critical link redirects to a known malicious domain (ttraff.com). This suggests a link farm or redirection tactic to obscure the final malicious destination. The document body itself is heavily obfuscated and contains the malicious redirector URL, indicating an attempt to lure the user to a harmful site.

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/pify?keyword=active+listening+skills+handout+pdf
    • http://files.comfychemocarebagproject.org/uploads/1/3/1/8/131871871/7849397.pdf
    • http://files.bearstatebowhunters.com/uploads/1/3/1/0/131069744/bosumekiv.pdf
    • http://files.owenstaxlouisville.com/uploads/1/3/1/4/131438718/d4717df2183.pdf
    • http://larogu.nilakim.com/uploads/1/3/1/4/131407406/ca91fefec7.pdf
    • http://kopisakak.sabreensaideat.com/uploads/1/3/1/0/131070786/1273919.pdf
    • https://cdn.shopify.com/s/files/1/0440/4166/6710/files/bovalupapijafixako.pdf
    • https://cdn.shopify.com/s/files/1/0433/5868/3295/files/xokukodulivolozig.pdf
    • https://cdn.shopify.com/s/files/1/0430/9313/1425/files/63081152473.pdf
    • https://cdn.shopify.com/s/files/1/0429/8244/1113/files/34532724035.pdf
    • https://cdn.shopify.com/s/files/1/0438/2100/7005/files/list_of_1980s_anime.pdf
    • https://cdn.shopify.com/s/files/1/0432/1555/2672/files/6273771244.pdf
    • https://cdn.shopify.com/s/files/1/0432/2571/0750/files/vigifeseb.pdf
    • https://cdn.shopify.com/s/files/1/0427/7082/5382/files/definicion_de_gastritis_cronica.pdf
    • https://cdn.shopify.com/s/files/1/0434/9270/4408/files/xijavi.pdf
    • https://cdn.shopify.com/s/files/1/0435/5014/6723/files/59213344453.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_off00007eec.bin
8a6298f41817228eaafb1a4e6fe610864a100be67eb20b0f8363f427d7416168		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7EEC 5432 bytes
font_01_sfnt_off00009174.bin
7124a64c809b5fd66ce2ed164cdbf5253a6cb33d701e93e963cc4eb26b854588		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9174 9976 bytes

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