Malicious PDF — malware analysis report

Static analysis result for SHA-256 0320886feab828b8…

MALICIOUS

PDF

74.5 KB Created: 2021-02-10 08:59:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: f4f86b48a1b3c2c75ac285259771bf69 SHA-1: b3be310fdaa756e6ccf130e65d3b980c9e060f40 SHA-256: 0320886feab828b85c89d6e405e3a936943472e9fadb7d08cceb1f75604dfa91
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/aws?utm_term=safety+data+sheet+for+chemicals PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4428331/normal_5fe4d3e6afb6e.pdfIn PDF document text
    • http://lnstagaram-verifiedbadges-from.com/93781344353wc9v0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451563/normal_5ff64db692990.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460708/normal_601fb06a773e3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418783/normal_60135cb18dcdd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482009/normal_600d556fc8225.pdfIn PDF document text
    • http://vowugewekoperak.iblogger.org/bleach_brave_souls_apk_9._0._4.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/lusabifef/39510157092.pdfIn PDF document text
    • https://s3.amazonaws.com/pomaxa/arabesque_debussy_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/palikuvexake/70010935284.pdfIn PDF document text
    • https://s3.amazonaws.com/rupatojuko/lingering_will_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/sikuva/music_artist_management_contract.pdfIn PDF document text
    • https://s3.amazonaws.com/vunizi/professional_soccer_betting_tips_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/sajezife/vemedadasavutixewija.pdfIn PDF document text
    • https://s3.amazonaws.com/muwemivumazulax/heigh_ho_nobody_home_sheet_music.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_off0000e466.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE466 5468 bytes
SHA-256: e76c6bf82e067b52c941ca815a5fe9426925bf06fec0fd83acd445613fb25824
font_01_sfnt_off0000f6dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6DC 11228 bytes
SHA-256: f21fd5d43640e8982b1e1da6a8760fc2869dd098dbd0171842ea1b6b0d6c920f