Malicious PDF — malware analysis report

Static analysis result for SHA-256 044d18b5d74d0879…

MALICIOUS

PDF

69.7 KB Created: 2021-02-11 20:30:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: f7ff1f01c1975a115c4751f8b5b80119 SHA-1: bcb7b2549ac40d5ca955891cd3b67b9e863d2312 SHA-256: 044d18b5d74d08792146f9cb65158a8bc900159b0ac1e9ce9319701edf4a760b
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://bologen.ru/wix?keyword=download+apk+hacker+keyloggers PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4480182/normal_5fe0b975cda3b.pdfIn PDF document text
    • http://insta-sale.site/antibiotics_simplified_gallagher4qxyh.pdfIn PDF document text
    • http://segway-wheelchair.ru/8295727795qaf3w.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465000/normal_5ff20b4eef372.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401555/normal_5fd3398372305.pdfIn PDF document text
    • http://gratoraama.website/mawitudualllb.pdfIn PDF document text
    • http://cybety.xyz/chemistry_matters_textbook_answerslabrf.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/mefonevimimix/c_template_class_multiple_definition.pdfIn PDF document text
    • https://s3.amazonaws.com/nonabafat/luzexomokosododuromilapi.pdfIn PDF document text
    • http://lamumabazekutum.epizy.com/gabadokifosa.pdfIn PDF document text
    • https://s3.amazonaws.com/fizup/cpf_annual_report_2016.pdfIn PDF document text
    • https://s3.amazonaws.com/jesidofefe/wujujobafegozumu.pdfIn PDF document text
    • https://s3.amazonaws.com/tofizo/llama_cake_template.pdfIn PDF document text
    • http://katezoluvezile.epizy.com/80341450964.pdfIn PDF document text
    • https://s3.amazonaws.com/wujodibu/27121207047.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_off0000d429.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD429 5592 bytes
SHA-256: c961a62e051d756a4c47d718c09bbc3cb67b6f3271789cf1f73b9780e4fe8e39
font_01_sfnt_off0000e755.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE755 10112 bytes
SHA-256: aa5f8477626d7d8bd8df9b395df92ba4347f2f7bdcd961ae6574386a0b4724eb