Malicious PDF — malware analysis report

Static analysis result for SHA-256 d79f4151af8a954a…

MALICIOUS

PDF

69.2 KB Created: 2021-02-22 00:40:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 0bb733cb9de0de5148a3b5ae48414b88 SHA-1: d20a74ba46c2ade9067d96d18871ae818891dbca SHA-256: d79f4151af8a954a4113cbf9b57fcd21b6458c669598b607c51f1c0279579b0e
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://jottigo.ru/123?utm_term=how+remove+pimple+marks+at+home PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4465545/normal_60183d6d6e6f0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383300/normal_6032dd4e0eb58.pdfIn PDF document text
    • http://rodsfish.club/norton_anthology_of_short_fiction6cscf.pdfIn PDF document text
    • http://puzofogerexiwi.22web.org/worksheet_in_periodic_table_of_elements.pdfIn PDF document text
    • http://sweetmeet.online/291912289242b00.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4484107/normal_5fe5976242b95.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367287/normal_5fe5360d62c86.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4423699/normal_5fca94e751cee.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489977/normal_5fd1fc1d01767.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414169/normal_5fe3ef1ce1d1c.pdfIn PDF document text
    • http://vinorama.fun/kadeborusegudepojorbni.pdfIn PDF document text
    • http://mon-cmbretagne.com/consulting_business_plan_template3v1mc.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/ziwuvijevo/xijoxiz.pdfIn PDF document text
    • http://goxoloxegaw.epizy.com/bhojpuri_gana_video_ing_full_hd_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/gidibesuxi/l_accumulation_du_capital_rosa_luxemburg.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_off0000cfc6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFC6 5236 bytes
SHA-256: 2913b3bbeeaa4a7158e212e8847512d1ce52622fcef56df6d0e85ad90c97b50d
font_01_sfnt_off0000e179.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE179 11300 bytes
SHA-256: 6d203c84aac142ac4a1da2a2546dbcfd625f54eeb465c6cc309e8b58e489bdb2