Malicious PDF — malware analysis report

Static analysis result for SHA-256 9dd61799c445e7a7…

MALICIOUS

PDF

45.4 KB Created: 2020-08-20 02:25:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5acc6152a3161a66167ebce61f103df3 SHA-1: 64c95cd8c2af2e0db7df775cca5867d7ef05597a SHA-256: 9dd61799c445e7a74f736dd1726039ce1da993dedbafb0034b366ad8e2056afd
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, a technique often used to create link farms for SEO poisoning or to direct users to malicious sites. One of the embedded URLs, https://ttraff.com/pify?keyword=cessna+150+aerobat+manual, is identified as a malicious redirector. The document body, though heavily obfuscated, contains this same URL, suggesting it is the primary lure. No scripts were extracted from this sample.

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=cessna+150+aerobat+manual
    • http://xudujax.aandersonportfolio.com/uploads/1/3/0/7/130775934/gerudalilogi-dojuwat-fudope-mulitito.pdf
    • http://files.heart-2-heart-angels.com/uploads/1/3/2/6/132681378/memeletikili.pdf
    • http://files.hunnicuttscience.com/uploads/1/3/0/8/130813701/saxuvoxesev.pdf
    • https://cdn.shopify.com/s/files/1/0438/1055/4013/files/34831863372.pdf
    • https://cdn.shopify.com/s/files/1/0429/7369/2063/files/english_to_spanish_dictionary_file.pdf
    • https://cdn.shopify.com/s/files/1/0438/3794/8061/files/probability_calculation.pdf
    • https://cdn.shopify.com/s/files/1/0431/8524/2261/files/percentage_error_chemistry_if8766_answers.pdf
    • https://cdn.shopify.com/s/files/1/0433/2532/5465/files/vasobozutom.pdf
    • https://cdn.shopify.com/s/files/1/0434/8300/5093/files/ripajixelipulotedi.pdf
    • https://cdn.shopify.com/s/files/1/0435/4539/5359/files/pivazodedinotavevogi.pdf
    • https://cdn.shopify.com/s/files/1/0431/3199/4280/files/information_about_france_in_french.pdf
    • https://cdn.shopify.com/s/files/1/0433/2647/2345/files/dasoguf.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_off000074e1.bin
fa09154a819e7dc859d308dc85c95c2613b4338296261e788976fc92eaa430a6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74E1 5196 bytes
font_01_sfnt_off0000866f.bin
3f1175253fcb60c48f3c68f4273744e3ed3a671e5d7b26b6490c1d1841c0dcee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x866F 10140 bytes

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