Malicious PDF — malware analysis report

Static analysis result for SHA-256 99e2c93b3f82ce22…

MALICIOUS

PDF

47.7 KB Created: 2020-10-25 14:01:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 0bd5458ecda2010bb0fb4a498d0c4076 SHA-1: 1060e04d83fecad90c12ffa4b6322932104db46b SHA-256: 99e2c93b3f82ce22c27bdc32eb106adc2e6eb663a2ce172c25efb1c2fea31911
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://ttraff.link/pify?keyword=hunter+ceiling+fan+remote+wiring+instructions In PDF document text
    • https://cdn-cms.f-static.net/uploads/4406463/normal_5f91d795678c9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388158/normal_5f8d4dd4bac51.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383146/normal_5f92b19aaef16.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369486/normal_5f887fd22179b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375507/normal_5f94cf7dcc10d.pdfIn PDF document text
    • https://rejileju.weebly.com/uploads/1/3/4/3/134335231/polexaso.pdfIn PDF document text
    • https://dosedupuwosiwoz.weebly.com/uploads/1/3/0/7/130776272/rajarofakosop_juxirobuso_bivevazas_fulutejudubeles.pdfIn PDF document text
    • https://togitarusufojir.weebly.com/uploads/1/3/2/6/132681229/6b6960f17c01.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off000079a2.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off000079a2.bin)
    • https://uploads.strikinglycdn.com/files/586317e3-7cb9-464d-b612-3759f488c201/xalidegeperorazetowi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/94a8ecfe-330d-4c49-b75d-3b873dfebe3b/amd_radeon_7570.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6102cd2d-4189-4fe4-ab8a-e3834b3d1678/xapezos.pdfIn PDF document text
    • https://s3.amazonaws.com/laradusa/catalogue_ikea_cuisine_2020.pdfIn PDF document text
    • https://s3.amazonaws.com/zuwimadaneb/22032152560.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/bahari_za_mashairi.pdfIn PDF document text
    • https://s3.amazonaws.com/zizene/gobanedumevotelodorojinib.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/mejodolelevotuval.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/3826/8318/files/zowamafitovot.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6870/3398/files/budukumupabamudi.pdfIn PDF document text
    • https://s3.amazonaws.com/fusidejebi/63696110678.pdfIn PDF document text
    • https://s3.amazonaws.com/kakef/free_trade_advantages.pdfIn PDF document text
    • https://s3.amazonaws.com/zerepuzuze/matodez.pdfIn PDF document text
    • https://s3.amazonaws.com/xukonakefules/38377376044.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/banal_mong_tahanan_lyrics_and_chords.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 extracted file (font_00_sfnt_off000079a2.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000079a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79A2 5252 bytes
SHA-256: 73255c63cf81651b82d3c870be31dcf493fbb08120c7740db414d3a8b74509e1
font_01_sfnt_off00008b79.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B79 10892 bytes
SHA-256: 1dd5f30410e1391d43fe575403d5a18884273c8de80c51d2fda292fef68ae84e