Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ae0ea4bdd55d46b…

MALICIOUS

PDF

51.8 KB Created: 2020-10-15 03:52:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 3164c6dc405bf32c10e8c20b5ceb77e5 SHA-1: 69891e671f765534af51ee0b6d646f7f11de5d0c SHA-256: 0ae0ea4bdd55d46be7a390fcd70d5972f6ea8aa6c3bd8615b2a72e47d664e99b
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 5

  • 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.
  • 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=download+eclipse+isle+apkpure In PDF document text
    • https://site-1037071.mozfiles.com/files/1037071/tarabaxigikogoder.pdfIn PDF document text
    • https://site-1041082.mozfiles.com/files/1041082/layout_manager_in_android_studio.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366399/normal_5f871a3038000.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368732/normal_5f878d8e7f307.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366660/normal_5f878ab49716c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366022/normal_5f871a41a60e0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366035/normal_5f87179a20d1c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366367/normal_5f876d1df1d6c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/6f22124f-edc5-4f99-9851-e6cec3f2f625/33930479762.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/19385e50-e44e-47f0-bf0f-bb4108a622ee/43359635470.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c5fe845b-ce4d-4bab-b077-52e021cdf073/72515873325.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8de8546c-04b5-4118-ad1e-044883ac1928/99033848863.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2389/1618/files/total_gym_1000_exercise_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/1014/3902/files/18713929584.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005d23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D23 4604 bytes
SHA-256: 42bfd844ee2e44a5cc922d5b959d6173dee5dd6b77ab170e9d3cdf1f94f61047
font_01_sfnt_off00006d38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D38 5220 bytes
SHA-256: 05c844ddac99195ade4f132ca56dd4321e644615d925712332432c441d02779f
font_02_sfnt_off00007f12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F12 1872 bytes
SHA-256: aaf5dfb5118221ac482a96ed5c4c83d74d47c97130c6f9eadd2fc6b170037092
font_03_sfnt_off00008821.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8821 10560 bytes
SHA-256: 15f1585af345965bd80a6ab10780f03bd71f6243070b816ad14597b829f4867c
font_04_sfnt_off0000ac8d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAC8D 16092 bytes
SHA-256: 9af6fc3bf9d751f70540aea0fa47faa159a3604992cda23d2adcda3ffc5346b2

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