Malicious PDF — malware analysis report

Static analysis result for SHA-256 1adf974ce88c54be…

MALICIOUS

PDF

44.3 KB Created: 2020-08-22 21:20:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a9300649ed36cf49af581d712df0d9a4 SHA-1: ee43d79f82cd11dd7884df7bd7feaef30484944c SHA-256: 1adf974ce88c54beda5c0c7a469ca4d2b4146e6468a33690b712c6471b805865
158 Risk Score

Malware Insights

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

The PDF file contains embedded JavaScript and a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com'. This indicates the document is intended to lure users to a malicious site. The presence of numerous PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to distribute the malicious content. No specific malware family is identifiable from the provided evidence.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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=cuneiform+fracture+cpt+code
    • http://files.sofiaahmad.com/uploads/1/3/1/6/131637178/69115484bb.pdf
    • http://files.mccoolauctions.net/uploads/1/3/1/4/131437380/fanabefofuxivuk-mimapibuzov-zinibojenisa-sodidiw.pdf
    • http://mametuzuf.fbcwinona.com/uploads/1/3/0/8/130814328/59c9b2d6.pdf
    • https://cdn.shopify.com/s/files/1/0432/0215/0557/files/65697827583.pdf
    • https://cdn.shopify.com/s/files/1/0466/5635/6517/files/how_to_make_checkmark_in_google_sheets.pdf
    • https://cdn.shopify.com/s/files/1/0436/5503/7078/files/sofarapopuzinabi.pdf
    • https://cdn.shopify.com/s/files/1/0431/7960/6177/files/49565137908.pdf
    • https://cdn.shopify.com/s/files/1/0433/3810/5000/files/23594381953.pdf
    • https://cdn.shopify.com/s/files/1/0428/5834/8700/files/reduce_size_acrobat_mac.pdf
    • https://cdn.shopify.com/s/files/1/0431/8858/4605/files/92246170741.pdf
    • https://cdn.shopify.com/s/files/1/0432/5841/3216/files/presentation_format_for_college_students.pdf
    • https://cdn.shopify.com/s/files/1/0428/6437/8022/files/nobovefivu.pdf
    • https://cdn.shopify.com/s/files/1/0437/1274/1529/files/64276201636.pdf
    • https://cdn.shopify.com/s/files/1/0435/3975/9259/files/lejudewopivimewepa.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_off00006672.bin
ae3b4a4107fe27e0f1fe2c0b636a96f3ccb4556240519ab0b6b1416ac3b844bb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6672 4996 bytes
font_01_sfnt_off00007758.bin
b28a16a942d90a3c05494df0e1eff41f62df16413632c55cadbddfcd20b9772c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7758 14564 bytes

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