Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e564370d6bae7ad…

MALICIOUS

PDF

51.7 KB Created: 2020-08-29 23:23:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a737a9312ba0e9c95805729f33d22080 SHA-1: 4f68d6a320323a18d2653c3c4d1e6a6c2850846c SHA-256: 8e564370d6bae7ad81b21eb1ecd840d0a87f1bfd5614536ced9c347b522b06ca
150 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains text suggesting a business context ('Global business 3rd edition peng') and includes the malicious URL. This indicates a phishing attempt designed to redirect users to harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.cc/wix?keyword=global+business+3rd+edition+peng
    • https://cdn.shopify.com/s/files/1/0440/8328/2070/files/76900215009.pdf
    • https://cdn.shopify.com/s/files/1/0430/9378/6791/files/64709944491.pdf
    • https://cdn.shopify.com/s/files/1/0450/7385/8710/files/anti_terrorism_proclamation_of_ethiopia.pdf
    • https://cdn.shopify.com/s/files/1/0434/6177/1430/files/problem_solving_101_download.pdf
    • https://cdn.shopify.com/s/files/1/0430/1655/2605/files/incentive_payout_template.pdf
    • https://cdn.shopify.com/s/files/1/0429/2096/8358/files/batigoxudagufokevala.pdf
    • https://cdn.shopify.com/s/files/1/0428/9386/9223/files/nogejumukoguselobixili.pdf
    • https://cdn.shopify.com/s/files/1/0436/5352/9753/files/acc_guidelines_cardiomyopathy.pdf
    • https://cdn.shopify.com/s/files/1/0437/9790/5569/files/line_feed_in_crystal_reports.pdf
    • https://cdn.shopify.com/s/files/1/0431/5008/2202/files/sasaxogikonaloti.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_off0000611d.bin
332f0a69cb02455ae821c3eb8c603c2f26ee55a6c0d73c36f4b00909cc98dffc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x611D 5024 bytes
font_01_sfnt_off000072b8.bin
b4f95386c2ffe3d5b022b80e9663063211f858a8ce39245016eacfc5a3836717		 pdf-font-stream PDF embedded font (sfnt) at offset 0x72B8 5344 bytes
font_02_sfnt_off000084e4.bin
942b58ff59eea82b69980874f7dfcd36383bb1f99f471604dbfe45cc32c495da		 pdf-font-stream PDF embedded font (sfnt) at offset 0x84E4 14392 bytes
font_03_sfnt_off0000b1ca.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB1CA 4324 bytes

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