Malicious PDF — malware analysis report

Static analysis result for SHA-256 5073826fbe2fec07…

MALICIOUS

PDF

71.9 KB Created: 2021-02-13 14:07:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 2ef390f95ec22bbc970eaf1f793a1805 SHA-1: f3112aa847331a8d8ed30c57197d56363340f4db SHA-256: 5073826fbe2fec075a7a9c36c8f20c7ceb8d9bd8e34c9eecf0f189a1fb87092b
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jottigo.ru/123?utm_term=st.+george%2527s+cathedral+guyana PDF link annotation
    • https://bijivabaj.weebly.com/uploads/1/3/4/6/134601785/zezapilaw_fiteburuwe_xuzonafejike.pdfIn PDF document text
    • https://tudadakamoziv.weebly.com/uploads/1/3/4/5/134596668/pelexo-fomevuro.pdfIn PDF document text
    • http://zuluwana.iblogger.org/alcatel_u3_3g_user_manual.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388406/normal_5fe8021e038b5.pdfIn PDF document text
    • https://junimadegerozo.weebly.com/uploads/1/3/4/0/134096607/838374.pdfIn PDF document text
    • http://tcerkovniekupola.space/228446934762n8pw.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481831/normal_6017dca90c1f3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496582/normal_602782a03fcb2.pdfIn PDF document text
    • https://fevobubutexub.weebly.com/uploads/1/3/4/4/134481878/zetibimuveli.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471275/normal_6019115753039.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/juzinaramip/video_er_free_online_video_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/ligole/57657085410.pdfIn PDF document text
    • https://s3.amazonaws.com/falufusu/acapella_group_songs.pdfIn PDF document text
    • http://sofidusujewa.epizy.com/world_economic_forum_report_is_published_by.pdfIn PDF document text
    • https://s3.amazonaws.com/sagotomagin/cutelaria_artesanal.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_off0000dc84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC84 5472 bytes
SHA-256: d6dee2b7f7b1adafef488dd194fb2d96c48d01768d3352ec17aba5785d75e20a
font_01_sfnt_off0000ef2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF2E 10512 bytes
SHA-256: d2cec6ef2326a2f6e95200ca634dd68246ea0c2954b692fd4b09b4abe5b0a74f