Malicious PDF — malware analysis report

Static analysis result for SHA-256 c67213fe9baed7c8…

MALICIOUS

PDF

38.3 KB Created: 2020-10-16 14:55:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: a833decbb9bd910f99404ac065f0dd1b SHA-1: 61de3c4b887e5b0e6f32b42af179a493ceee71f5 SHA-256: c67213fe9baed7c819dbc4a1120deec1ad7b98432a94cc88c4770fae2ef41325
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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/pify?keyword=glass+block+installation+guide In PDF document text
    • https://fijojonibiw.weebly.com/uploads/1/3/2/6/132681787/linurigaruxox.pdfIn PDF document text
    • https://gewosawoma.weebly.com/uploads/1/3/0/7/130739201/jotijova.pdfIn PDF document text
    • https://jatorogerujew.weebly.com/uploads/1/3/2/7/132710569/09b03b.pdfIn PDF document text
    • https://dapujevubo.weebly.com/uploads/1/3/1/4/131438680/b25b27.pdfIn PDF document text
    • https://wepugimi.weebly.com/uploads/1/3/1/0/131070973/17d0ebd6de52.pdfIn PDF document text
    • https://vimiwegom.weebly.com/uploads/1/3/0/7/130775837/taginex_jenawu_daforupobojifut_riwawiruge.pdfIn PDF document text
    • https://vaxajiwozoli.weebly.com/uploads/1/3/1/6/131637631/wexomado-xadafegegadunux.pdfIn PDF document text
    • https://zoveponezewuda.weebly.com/uploads/1/3/0/7/130738822/laxojajigoluv.pdfIn PDF document text
    • https://vimiwegom.weebly.com/uploads/1/3/0/7/130775837/4401886.pdfIn PDF document text
    • https://varipejat.weebly.com/uploads/1/3/0/7/130739080/6458110.pdfIn PDF document text
    • https://kidunaxu.weebly.com/uploads/1/3/1/4/131437100/f5f25b1e6e2d4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365626/normal_5f8712cb8c919.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367311/normal_5f8760ee9f002.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365600/normal_5f870767e160f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366377/normal_5f889b859ac07.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/1/0500/5069/5336/files/police_verification_format.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/1357/9174/files/tamu_rec_pool_hours.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/4353/2185/files/22605774619.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4784/4000/files/leadership_research_findings_practice_and_skills_by_andrew_j._dubrin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3337/0529/files/night_vision_potion_8_minutes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/5516/4821/files/nikanexovi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/0471/2898/files/fuzoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/1542/1083/files/dd2_mastery_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/0070/1343/files/92637957689.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_off000057a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57A0 5248 bytes
SHA-256: 6f3ef4cadb1a5a9742519c1d47e0fe76def375136c1162f779b742c90a335d48
font_01_sfnt_off00006988.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6988 9972 bytes
SHA-256: 3c0160cf61a7d867b6a6d2b2c503fd27dfc4f714e465f1d4089e76252b5952da