Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0e6dddb80754321…

MALICIOUS

PDF

71.0 KB Created: 2021-02-24 13:28:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: f382f8f1239d8268d9bb939bc297214b SHA-1: 330373f98065951c9dbf6aefc96d5f21ef24163b SHA-256: f0e6dddb80754321c5a9cd061abe3441e158a6e279bbcecaf98b132d635cbd19
254 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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.
  • 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.
  • 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/aws?utm_term=types+of+fire+hose+loads In PDF document text
    • http://frut-tree.site/game_of_thrones_season_7_episode_4_download_tamilrockersnb2lm.pdfIn PDF document text
    • http://lajulufubugo.22web.org/81742369548.pdfIn PDF document text
    • https://cdn.sqhk.co/kajutizikodu/OOYXgg4/ziwugerojalu.pdfIn PDF document text
    • http://salet.store/vamo_alla_flamenco7gl2k.pdfIn PDF document text
    • http://trastenmyqort.online/como_converter_um_arquivo_para_autocadl387y.pdfIn PDF document text
    • https://gupijevud.weebly.com/uploads/1/3/1/4/131407369/7b8016b0.pdfIn PDF document text
    • http://xxlmature.site/18254220379wrvns.pdfIn PDF document text
    • https://cdn.sqhk.co/kajutizikodu/EhgTgen/zombie_experiments_horror_movies_2020.pdfIn PDF document text
    • http://wukosuwusa.iblogger.org/instagram_videos_online_free.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/garorowa/ascus_and_hpv_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/fifuto/74573991445.pdfIn PDF document text
    • https://s3.amazonaws.com/minegikukovel/tafedariputaforatore.pdfIn PDF document text
    • http://gaxufaxurawago.epizy.com/noberituse.pdfIn PDF document text
    • http://xojorefalez.rf.gd/32724341974.pdfIn PDF document text
    • https://s3.amazonaws.com/busutafitufe/49125118855.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_off0000d9b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9B2 5180 bytes
SHA-256: 8ea3e7b62211cefc252a4a74ce07df45d22e969730f7127ef6de1c93c794f2d0
font_01_sfnt_off0000eb53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB53 10508 bytes
SHA-256: 24f8a28e77022e359d8b3ef2938851da4c11d46d228fb74933d8374b9fdef46b