Malicious PDF — malware analysis report

Static analysis result for SHA-256 c74be00d46870c64…

MALICIOUS

PDF

44.4 KB Created: 2020-08-25 14:44:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b4ca4366c0b2a8ec77594c25561e8ca9 SHA-1: 8bf1eaeb6d801c225941176831a8b897f31b597d SHA-256: c74be00d46870c648f8781cf3776b167e8f50b0d8fcb2b210281a80840d490e0
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which are designed to mimic legitimate document titles, suggesting a link farm or SEO poisoning tactic. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.com/pify?keyword=sarraceniaceae+of+north+america+pdf'. While no scripts were extracted, the presence of numerous external links, including one to a known malicious redirector, indicates a phishing or redirection attempt. The ML classifier also strongly flagged this PDF as malicious.

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=sarraceniaceae+of+north+america+pdf
    • http://files.jackblairgray.com/uploads/1/3/2/6/132695714/05c633.pdf
    • http://files.amatterofinspiration.org/uploads/1/3/0/9/130969090/47b3eed.pdf
    • http://nogajozo.oaklandcabinetcoatings.com/uploads/1/3/2/7/132740930/rerawejamuvemap.pdf
    • http://files.nvansistine.com/uploads/1/3/0/8/130813701/c3791.pdf
    • https://cdn.shopify.com/s/files/1/0433/5498/0507/files/jivirepuxemixiki.pdf
    • https://cdn.shopify.com/s/files/1/0435/8311/1336/files/shaun_the_sheep_season_5_episode_20.pdf
    • https://cdn.shopify.com/s/files/1/0429/7061/1861/files/causes_of_rheumatoid_arthritis.pdf
    • https://cdn.shopify.com/s/files/1/0433/2303/1720/files/examination_of_cranial_nerves.pdf
    • https://cdn.shopify.com/s/files/1/0436/2112/2211/files/definition_of_continuous_professional_development.pdf
    • https://cdn.shopify.com/s/files/1/0431/4942/6845/files/gatipopikiwawavedisu.pdf
    • https://cdn.shopify.com/s/files/1/0431/5322/7936/files/facebook_sign_up_free.pdf
    • https://cdn.shopify.com/s/files/1/0462/7487/1458/files/bemilawoxidogepeb.pdf
    • https://cdn.shopify.com/s/files/1/0430/9427/8293/files/best_games_to_play_on_android_2018.pdf
    • https://cdn.shopify.com/s/files/1/0444/1263/3254/files/44648445426.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_off0000709a.bin
8cec0dab73a7f92c226765e2a59ea8b494b28bb49c237082786447894c7f7a75		 pdf-font-stream PDF embedded font (sfnt) at offset 0x709A 5288 bytes
font_01_sfnt_off0000825b.bin
2a6d2a94340c3d5d3538a5dc7e17b3163e1a94b765e482ed359e9b42757c0fd9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x825B 10104 bytes

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