Malicious PDF — malware analysis report

Static analysis result for SHA-256 e714af76f43a4e1c…

MALICIOUS

PDF

68.4 KB Created: 2021-01-27 23:06:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 1efa163cf6bfa70a890f7204867f5dff SHA-1: 95b2b442c512fda41a6d1c5c5e5acd78a0b172b4 SHA-256: e714af76f43a4e1c52c55a1255aa9f62160a1eccd0c5c60087ec10e9a7fe1b57
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://traffset.ru/wb?keyword=u%20miami%20academic%20calendar%20spring%202020 PDF link annotation
    • https://fowuwulavo.weebly.com/uploads/1/3/4/7/134754099/sokebedu.pdfIn PDF document text
    • http://pogetukexuk.66ghz.com/debabolaba.pdfIn PDF document text
    • https://jijaxiwiruba.weebly.com/uploads/1/3/5/3/135333012/lujowata.pdfIn PDF document text
    • http://metagopu.22web.org/70819232890.pdfIn PDF document text
    • https://zewujinewototi.weebly.com/uploads/1/3/4/7/134749630/jolewave.pdfIn PDF document text
    • https://zurudepovog.weebly.com/uploads/1/3/1/4/131438860/sizajuvirunofap-zazobemoperobo.pdfIn PDF document text
    • https://tivifetanesa.weebly.com/uploads/1/3/5/3/135347176/rojaguzesep.pdfIn PDF document text
    • http://politach.com/xozafinopugusimufes0lc4.pdfIn PDF document text
    • https://larikizog.weebly.com/uploads/1/3/1/0/131071312/miwiwojatuzug_laluwezunurupub_jepatenalu.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/begijufadi/nunakijesuderog.pdfIn PDF document text
    • http://vidomolojo.epizy.com/mibukonida.pdfIn PDF document text
    • https://s3.amazonaws.com/regufojalojaza/jessore_board_jsc_result_2017_with_marksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/gosete/ferarovirawewatobitoxe.pdfIn PDF document text
    • https://s3.amazonaws.com/fotepopunaj/95746654107.pdfIn PDF document text
    • http://dunedobaxapekir.epizy.com/anatomi_hernia_inguinalis.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_off0000ced1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCED1 5656 bytes
SHA-256: ae5d3df745937b6e2209617fabb3c323f5f7162ad005af5602b7ce9d83971dd5
font_01_sfnt_off0000e1fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1FA 10168 bytes
SHA-256: 2669756e77813512a8ef79e6cf16a25fc77a8fd57e136d516e7f8425e7843199