Malicious PDF — malware analysis report

Static analysis result for SHA-256 468e629aa3471aed…

MALICIOUS

PDF

43.1 KB Created: 2020-08-23 12:46:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9e00191ef9e1f265cc36c2c84af72d60 SHA-1: 14c8d3829b983927887a4ea583bc39139bedb8a0 SHA-256: 468e629aa3471aed0c756d37cde3555e96cfcd93eb2ff158231a672b5cf2f2fa
150 Risk Score

Malware Insights

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

The PDF was flagged for containing a malicious redirector link and a large link farm. The primary malicious URL identified is ttraff.com, which is used in conjunction with a keyword related to the document's apparent topic. The document body contains garbled text but includes the same URL, suggesting it is the intended destination for users interacting with the document.

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.com/pify?keyword=coleoptera+characteristics+pdf
    • http://files.petercolefriedman.com/uploads/1/3/1/8/131871484/8353887.pdf
    • http://files.valleyliberator.com/uploads/1/3/1/6/131606035/padavosagog.pdf
    • http://jubixu.samuelbloch.fr/uploads/1/3/1/1/131164250/e14e16e48eb9c1.pdf
    • http://files.leighandbloo.com/uploads/1/3/2/6/132682640/efebc2330fa3.pdf
    • http://weziju.markpinder.org/uploads/1/3/1/0/131070197/7582700.pdf
    • https://cdn.shopify.com/s/files/1/0432/2187/6899/files/rolafukadi.pdf
    • https://cdn.shopify.com/s/files/1/0432/1427/4720/files/47614787658.pdf
    • https://cdn.shopify.com/s/files/1/0433/4583/8232/files/zesiravewasozuno.pdf
    • https://cdn.shopify.com/s/files/1/0429/6356/6755/files/33849685697.pdf
    • https://cdn.shopify.com/s/files/1/0435/5181/7883/files/corellian_conflict_map.pdf
    • https://cdn.shopify.com/s/files/1/0431/5765/1613/files/ragnarok_idle_poring_mage_guide.pdf
    • https://cdn.shopify.com/s/files/1/0432/4704/2728/files/attendance_format_with_in_and_out_time.pdf
    • https://cdn.shopify.com/s/files/1/0436/0863/7602/files/youth_410_shotgun_walmart.pdf
    • https://cdn.shopify.com/s/files/1/0438/6720/9883/files/js_interview_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0433/8394/7414/files/power_spread_offense_playbook.pdf
    • https://cdn.shopify.com/s/files/1/0431/9117/3278/files/past_simple_questions_exercises_elementary.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_off00006a2c.bin
3dd22f2b9c5dc05e8174d9f62a5897047c8a7b13d7b2c270b1242c871dd389ca		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A2C 5148 bytes
font_01_sfnt_off00007b9b.bin
9195f321a97ac3fe038bf32fef3599858915d64b06e2ff84dcb6887331c6277b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B9B 10388 bytes

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