Malicious PDF — malware analysis report

Static analysis result for SHA-256 c698594aba661244…

MALICIOUS

PDF

44.9 KB Created: 2020-10-14 23:48:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: e13247705a8a455dfc69b22221ee8bd3 SHA-1: b77310aa68ef8a16fff2d982f0626f5a2c7cb7dc SHA-256: c698594aba661244f4c7b903cd24a68b4cd3b372d05b0633b33a199bf26f6d1c
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://gettraff.ru/123?keyword=secure+app+manager+android In PDF document text
    • https://rimesozarabef.weebly.com/uploads/1/3/1/6/131607712/e5d13d1eabae7dc.pdfIn PDF document text
    • https://rimesozarabef.weebly.com/uploads/1/3/1/6/131607712/pimemelaju-galewiwimav-zefugififirod.pdfIn PDF document text
    • https://jatorogerujew.weebly.com/uploads/1/3/2/7/132710569/8276696.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365660/normal_5f8719817e3ef.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365575/normal_5f8719835a679.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366622/normal_5f875e759ef73.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365626/normal_5f873edb04aff.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366406/normal_5f872a964558d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/8189/2509/files/medasapiluf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0268/8263/8017/files/29406213620.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5543/1323/files/making_common_sense_common_practice_models_for_operational_excellence.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/8304/1430/files/avalon_anders_wish_me_luck.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4ff272c2-5686-4902-90e8-7f84b558a76b/daninoxawomobafadufexakiv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b3de48db-3752-4241-ac49-1a665e26ba45/99469682230.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3e151571-6c78-48d5-9eee-61795e905f94/jixurakafi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4274f596-46e0-4118-90e7-7d9970b070d5/59398681139.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bc856f43-0561-46ca-a110-ee592c786bd2/kasewazi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1620376b-aa10-4cf2-bc82-be3b9b8162ff/42561846513.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e10143ef-70da-4ef1-8ce7-f059684cf5b3/siwologinarupi.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007155.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7155 5284 bytes
SHA-256: 3dd9cc837653ca0790a79dd5ba921e6d13fe16da2be4b4b1d270eedcdb2a82aa
font_01_sfnt_off00008332.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8332 10428 bytes
SHA-256: 45ae616ce17ff091232aea5b8c81b6c8a420e3c838f7431a3f106ed182e1643f

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