Malicious PDF — malware analysis report

Static analysis result for SHA-256 949bac2d56f19959…

MALICIOUS

PDF

44.1 KB Created: 2020-11-03 00:33:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-04-10
MD5: abbdcd8ed6e644e6bc65d6466a198d60 SHA-1: 2bd265ff69c59dc44661a61f7c8f63e604490e76 SHA-256: 949bac2d56f1995913ea89f9b125d17ad25a36e676775191af023c56aadffb72
234 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Travel-support phone-number stuffing scam high SE_TRAVEL_SUPPORT_PHONE_SCAM
    Document repeats phone numbers in airline/travel/refund/support language, often across multiple regional phrasings. This matches SEO/support-scam PDFs that impersonate airlines or travel brands and route users to attacker-controlled call centers rather than a normal travel document.
  • 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://ggtraff.ru/wb?keyword=precalculus%20worksheet%20answers In PDF document text
    • https://dojarugakafep.weebly.com/uploads/1/3/4/4/134471698/zufixeb.pdfIn PDF document text
    • https://s3.amazonaws.com/baxekojojexusol/23980656383.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxime/50889876468.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/bosquejos_biblicos_para_predicar.pdfIn PDF document text
    • https://s3.amazonaws.com/jolituzoji/navoviweduwatavumena.pdfIn PDF document text
    • https://s3.amazonaws.com/wewuxuviwar/dexiludurinopopadesufota.pdfIn PDF document text
    • https://s3.amazonaws.com/miwolezedubujoz/zuripan.pdfIn PDF document text
    • https://s3.amazonaws.com/jepinebawo/shunting_of_blood_in_liver.pdfIn PDF document text
    • https://s3.amazonaws.com/pedokeza/zanuzuvojodozakarejanar.pdfIn PDF document text
    • https://s3.amazonaws.com/rotowan/affairscloud_current_affairs_in_hindi.pdfIn PDF document text
    • https://s3.amazonaws.com/luresimosip/threshold_tv_series_download.pdfIn PDF document text
    • https://tekegalesi.weebly.com/uploads/1/3/0/7/130740489/6173289.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00006dfa.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00006dfa.bin)
    • 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_off00006dfa.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006dfa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DFA 5044 bytes
SHA-256: 2d78ca36e4982f7480b2cebd03b5a0931a2aab022f649147646ad64fbb10e0ce
font_01_sfnt_off00007f2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F2D 10716 bytes
SHA-256: e0735350178db82d2cf21666cf05b83228b446e6a437dcfbf4d8b8a23c89bbd4