Malicious PDF — malware analysis report

Static analysis result for SHA-256 472980526ce21653…

MALICIOUS

PDF

73.1 KB Created: 2021-02-19 19:26:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: ed4f125c6d5692afae2b14132c1d069c SHA-1: 58d152842248b4faac20b6ee11670b35d7f79117 SHA-256: 472980526ce21653a0b978c48195f8392c8d5d6872dd5014612af8036aab3d8d
254 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • 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://crophysi.ru/wix?keyword=future+fight+hack+app In PDF document text
    • https://static.s123-cdn-static.com/uploads/4388613/normal_5fe2a2f91eb7b.pdfIn PDF document text
    • https://vasetovomakoti.weebly.com/uploads/1/3/2/7/132741031/vesokewuwij_lajujege_lumojusopugenun_lebafal.pdfIn PDF document text
    • https://togijiwasifuva.weebly.com/uploads/1/3/1/3/131398416/fifokanapa_jifotomawat.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426814/normal_5ff67710ba617.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470961/normal_60075578bff41.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459319/normal_5feaef9b7b5bd.pdfIn PDF document text
    • http://fredo.run/881976855281sykk.pdfIn PDF document text
    • https://galujamisone.weebly.com/uploads/1/3/1/8/131871568/vugaxatemidedeg.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425784/normal_60006cdaa08d6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4444098/normal_5fe3695a11d34.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365624/normal_5fcfaf11c36ae.pdfIn PDF document text
    • http://lnstagramsupportinfo.com/35245937850a5eu.pdfIn PDF document text
    • http://islemleriniz.org/sedugavogumulewaxadorwrly.pdfIn PDF document text
    • http://siteznakomstv69.space/5587414639o78qp.pdfIn PDF document text
    • https://gozezitigaja.weebly.com/uploads/1/3/4/3/134340412/xofaligikovenuke.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/patilawasu/radowi.pdfIn PDF document text
    • https://s3.amazonaws.com/marimejerebo/82127122213.pdfIn PDF document text
    • https://s3.amazonaws.com/buponuwebi/sarkodie_adonai_feat_castro.pdfIn PDF document text
    • https://s3.amazonaws.com/kewakuko/81389256117.pdfIn PDF document text
    • https://s3.amazonaws.com/kavifunaruvi/long_run_cost_curve_diagram.pdfIn PDF document text
    • https://s3.amazonaws.com/makumapikeze/livebavusafejarelelebopo.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_off0000e24e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE24E 5088 bytes
SHA-256: 8398d2dd0dd4b0fce77114a2d48b2ca3f0f4bacffcefd439d9380cef999f9100
font_01_sfnt_off0000f3a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3A3 10240 bytes
SHA-256: 3a83258f8749b4c9d0cd8ff45cf5ad7154d7447c7651973fafab8c14e3ab6844