Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff7b1ddd391f1a13…

MALICIOUS

PDF

39.2 KB Created: 2020-08-17 15:03:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7fe7aed4a3f397f4ebdee6135f9961dd SHA-1: c5c344af7ce6cf898142f0ccf2f7be7fa56b988d SHA-256: ff7b1ddd391f1a1366fc972ff6c52e0d73a4d4dde59dbcfcfd2f4046f93d3138
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a link that redirects to a known malicious domain, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains text suggesting a lure related to 'loan agreement template', and the PDF_SEO_LINK_FARM heuristic indicates a large number of embedded links, many pointing to Shopify domains, likely for SEO poisoning or to host further malicious content. The presence of a download button lure further supports a malicious intent.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=loan+agreement+template+between+family+members+uk
    • http://files.teachcruachan.com/uploads/1/3/0/8/130874001/8224472.pdf
    • https://cdn.shopify.com/s/files/1/0428/5241/7692/files/bisefupefojarukagen.pdf
    • https://cdn.shopify.com/s/files/1/0435/9444/9055/files/33159284753.pdf
    • https://cdn.shopify.com/s/files/1/0431/4637/9426/files/escape_room_game_level_106_answer.pdf
    • https://cdn.shopify.com/s/files/1/0434/7058/6022/files/iron_deficiency_anemia_symptoms.pdf
    • https://cdn.shopify.com/s/files/1/0438/2117/0850/files/65304446126.pdf
    • https://cdn.shopify.com/s/files/1/0434/0878/5562/files/matepe.pdf
    • https://cdn.shopify.com/s/files/1/0432/4635/4594/files/lakiwuwasiwad.pdf
    • https://cdn.shopify.com/s/files/1/0430/9732/5732/files/heap_income_guidelines_california.pdf
    • https://cdn.shopify.com/s/files/1/0434/7763/1126/files/bhajan_songs_telugu.pdf
    • https://cdn.shopify.com/s/files/1/0429/1392/3228/files/74090476743.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_off00005aac.bin
0e0ee86f3ba630c01ab1e7d68c2dbbce1f03a6e017b32b11b6b6264b09cad70f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5AAC 5560 bytes
font_01_sfnt_off00006da0.bin
a6777cdd944bdb836bdceee3ecf6bf3abd96730bfef57c5ee49558552d363871		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DA0 10036 bytes

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