Malicious PDF — malware analysis report

Static analysis result for SHA-256 7bc2dd2b5835c073…

MALICIOUS

PDF

63.4 KB Created: 2021-02-20 01:43:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 5a9117434693a92ec5240d9b9569e293 SHA-1: d21f2fd871c2b2c65bbe738e4e1fe259f451040f SHA-256: 7bc2dd2b5835c073021aa018fd826fc77b278c2ca7081ba40cbc8ce590cacdbe
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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/wb?keyword=oreck%20xl21%20change%20belt In PDF document text
    • https://cdn.sqhk.co/natefisaka/yD0ficq/19467064888.pdfIn PDF document text
    • https://cdn.sqhk.co/farukisinu/iagfVht/suzomudoxepozewuworu.pdfIn PDF document text
    • https://cdn.sqhk.co/nananava/hVwRhhl/weedmaps_stock_name.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476758/normal_5fee9afbe7c51.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393356/normal_5ff6a5898a34c.pdfIn PDF document text
    • https://cdn.sqhk.co/jopuromug/I0Xje4Y/stick_war_legacy_mod_apk_download_link.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4401989/normal_5ffb7727e449b.pdfIn PDF document text
    • http://zikuwojanubeg.iblogger.org/beatles_album_songs.pdfIn PDF document text
    • https://cdn.sqhk.co/dejuxafe/AUibfgh/fupuxa.pdfIn PDF document text
    • https://cdn.sqhk.co/zafupusapun/ghjfDm7/bolawirezixabanajememiv.pdfIn PDF document text
    • https://wulavaborumutol.weebly.com/uploads/1/3/0/7/130776887/6364580.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/debamijizozexo/tv_advertisement_video_mp4.pdfIn PDF document text
    • http://mudozegiviw.epizy.com/75473408123.pdfIn PDF document text
    • https://s3.amazonaws.com/bagokiko/chemistry_worksheet_mole_concept_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/wuwabobujasivor/german_language_learning_books_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_off0000bc18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC18 5364 bytes
SHA-256: cc5b3e968a3e21d018d6703fd296980d31201060330295ea9f5f9dc51838fa1c
font_01_sfnt_off0000ce5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE5D 10204 bytes
SHA-256: 572e84d373d50ee63b27674733f43d4d0ad5ba3b3fb787d34953751d576a22db