Malicious PDF — malware analysis report

Static analysis result for SHA-256 be9c840bff9d6cec…

MALICIOUS

PDF

71.7 KB Created: 2021-02-08 15:55:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 0071a7e8d3b7c96bc3a1e78f2a51286f SHA-1: 6e82ffc3bed25b32d76749a26e26b4ea7526f81e SHA-256: be9c840bff9d6cec23cb1fde94459834bc9bac9a3e8db60bd8bfeae87b1ce87b
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://maypoin.ru/wb?keyword=local%20guide%20fake%20reviews PDF link annotation
    • http://septiki-rf.website/annmaria_kalippilanu_movie_songsms2kx.pdfIn PDF document text
    • https://cdn.sqhk.co/rawewosit/iaYibyr/us_top_40_urban_radio_chart.pdfIn PDF document text
    • https://cdn.sqhk.co/fewibefanid/dgTjion/steampunk_keyboard_datamancer.pdfIn PDF document text
    • http://instapodarok.site/medical_fitness_certificate_for_schoola2me7.pdfIn PDF document text
    • https://cdn.sqhk.co/jigugabopu/cY8pjc8/wbtvd_screeners_app.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369334/normal_5fd7a7de487b7.pdfIn PDF document text
    • https://cdn.sqhk.co/digubamot/LEWGljf/85172791646.pdfIn PDF document text
    • http://repair-monokoles.ru/kuwijwxc9b.pdfIn PDF document text
    • https://cdn.sqhk.co/xamitarerivu/ugjeZiI/96944623735.pdfIn PDF document text
    • http://svoytrylend.xyz/gulozr5ly0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368243/normal_5fda93d3c6a22.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/lebaxa/animated_ppt_templates_free.pdfIn PDF document text
    • https://s3.amazonaws.com/kefefetafij/euphonium_quartet_sheet_music_free.pdfIn PDF document text
    • https://s3.amazonaws.com/wusigipufuvowix/kekavapajojuviloza.pdfIn PDF document text
    • https://s3.amazonaws.com/gonima/17105211872.pdfIn PDF document text
    • https://s3.amazonaws.com/pavujiniz/aliens_1986_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/zuniverijesud/lojakagowedigubixabekus.pdfIn PDF document text
    • https://s3.amazonaws.com/julexekubaj/astrology_software_for_pc_free.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_off0000dbef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBEF 5344 bytes
SHA-256: 64081b8c11e900fcf622b0783bc2e5f0d2afec2f09a4ffcae542a862a6e010a7
font_01_sfnt_off0000ee4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE4D 10496 bytes
SHA-256: 733cd383aa01f8989975a26a573c537e30a5249fdd16f1f1147d40632c0424ad