Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec6d8b9b1de424e4…

MALICIOUS

PDF

54.9 KB Created: 2020-09-01 09:07:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c4d364e889e1e10559ac10d64138c4dd SHA-1: b5753f0c9278989ef8fa5a5b4e1efaaa9fa719df SHA-256: ec6d8b9b1de424e40c7e7706f1009032ff870037917c0890b21c78da2f5bf4e7
128 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/wix?keyword=anemia+adalah+pdf+2019'. Additionally, it exhibits a PDF link farm behavior, embedding numerous external PDF links, many hosted on shopify.com and static.usrfiles.com. The document body, though heavily obfuscated, contains the same malicious URL. This suggests a campaign to drive traffic to malicious infrastructure, likely for SEO spam or phishing.

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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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=anemia+adalah+pdf+2019
    • https://cdn.shopify.com/s/files/1/0459/1222/7989/files/apr_performance_logo_vector.pdf
    • https://cdn.shopify.com/s/files/1/0435/3127/2346/files/pezidewujidivalata.pdf
    • https://cdn.shopify.com/s/files/1/0431/1243/1776/files/google_translate_english_to_indonesia.pdf
    • https://cdn.shopify.com/s/files/1/0434/3264/0679/files/15760275726.pdf
    • https://cdn.shopify.com/s/files/1/0436/6509/6857/files/us_open_draw_sheet_today.pdf
    • https://static.usrfiles.com/ugd/e2c6c1_d345c50bc475415d9211c16e48f635f4.pdf
    • https://static.usrfiles.com/ugd/b8c837_79a4e57205f04ba58e0393a2ba477be0.pdf
    • https://static.usrfiles.com/ugd/b8c837_ca84c32b404848afb21662144e46e05e.pdf
    • https://static.usrfiles.com/ugd/4d935e_8b9b15bea17248a2bc03be1ce6087827.pdf
    • https://static.usrfiles.com/ugd/b8c837_e0ec9d01b5224ac2b0db595c21313d7c.pdf
    • https://static.usrfiles.com/ugd/3fc21f_d1fa8382cdb244bc97ece373727ddad8.pdf
    • https://static.usrfiles.com/ugd/b8c837_f6b5df4004064f65a2c41b7d1b8e82e4.pdf
    • https://static.usrfiles.com/ugd/79e5df_e6dd60b3fe7946f8a4ebbe2bcea36ca2.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_off00009827.bin
3f19d4d9b88ecf21c17444a3704fd81b4cb2cdf733aa66affaf97889b3a7426e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9827 5476 bytes
font_01_sfnt_off0000aaaa.bin
202607aaabef0c05f28fc20212fa7bf75f538f0907987175b06003cbb6d5fb79		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAAAA 10744 bytes

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