Malicious PDF — malware analysis report

Static analysis result for SHA-256 1175bbfce7889739…

MALICIOUS

PDF

70.7 KB Created: 2021-02-10 15:43:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 85341d39255bc33d922e68ee1cb4a139 SHA-1: 37e2651204937c29c1f5a471f7d45be956ef78d9 SHA-256: 1175bbfce788973931d169c42ffad0f4a0f015309b444d3f580209b1d4dd26fd
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://jacksth.ru/wb?keyword=collateral%20beauty%20mp4%20movie PDF link annotation
    • https://nabivedoki.weebly.com/uploads/1/3/1/4/131407492/nifogusotika.pdfIn PDF document text
    • https://zaroralovez.weebly.com/uploads/1/3/0/8/130814195/28f9ee3312d1.pdfIn PDF document text
    • http://nnorm-id.com/jazz_piano_sheet_music_musescorexdzfa.pdfIn PDF document text
    • http://xenuven.22web.org/annual_performance_evaluation_report_form.pdfIn PDF document text
    • https://ferizovewop.weebly.com/uploads/1/3/4/8/134887996/sebijowesibimujadef.pdfIn PDF document text
    • http://fruktovik.com/306098382933ka2a.pdfIn PDF document text
    • http://tulakijumipad.22web.org/jorupezadekekokid.pdfIn PDF document text
    • https://giximanuv.weebly.com/uploads/1/3/4/5/134526051/nugode.pdfIn PDF document text
    • http://repair-foto.ru/pidejudodisaxirowonitbs0.pdfIn PDF document text
    • http://portkamesto.site/skirt_pattern_girlwns2w.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/tesotiwapax/23482276826.pdfIn PDF document text
    • https://s3.amazonaws.com/muwemivumazulax/29293041070.pdfIn PDF document text
    • https://s3.amazonaws.com/tesodagiwor/can_i_dota_2_on_mac.pdfIn PDF document text
    • https://s3.amazonaws.com/dozuga/bossa_nova_musicas.pdfIn PDF document text
    • http://gejujebiwibi.epizy.com/fufosu.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_off0000d99e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD99E 5084 bytes
SHA-256: 1e4ca858538e25747c00653bbcaee4a2b12afd9d0dcb0db0915371f5bd8582a1
font_01_sfnt_off0000eade.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEADE 10212 bytes
SHA-256: 43e88d08469a348d78046c362411354a728f8c0e07865e7c145d3376c86a977b