Malicious PDF — malware analysis report

Static analysis result for SHA-256 2469ada35a58baa5…

MALICIOUS

PDF

71.6 KB Created: 2021-02-15 21:25:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: e371a169169f41f4e18e9041c4ba95a3 SHA-1: 46fbcb064c247db447918fa0a1784a7e039832a6 SHA-256: 2469ada35a58baa544e866e653e08ea2e51393a283392777ac52e06261a05e10
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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.
  • 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/wix?keyword=minecraft+apk+0.15.0+free+download PDF link annotation
    • https://cdn.sqhk.co/lewulula/ijaibtJ/72603100996.pdfIn PDF document text
    • https://xopilujipuwoka.weebly.com/uploads/1/3/4/8/134886601/titimobupapudane.pdfIn PDF document text
    • https://fotavimapuwe.weebly.com/uploads/1/3/2/8/132816041/salupokanij.pdfIn PDF document text
    • https://cdn.sqhk.co/silinetufid/SWjiji1/new_santali_sad_ringtone_2019_download.pdfIn PDF document text
    • https://cdn.sqhk.co/xafemepino/hg3hggg/that_s_life_my_love_in_french.pdfIn PDF document text
    • https://cdn.sqhk.co/zesonixiv/djdhigf/kafuzu.pdfIn PDF document text
    • https://zozilevijuni.weebly.com/uploads/1/3/1/3/131383476/vinuwoxupabadolutof.pdfIn PDF document text
    • https://cdn.sqhk.co/linerutinew/RM7b7DV/difference_between_barbershop_and_hair_salon.pdfIn PDF document text
    • https://cdn.sqhk.co/ruxukulalodi/UdgfDgj/muratoponazotogikut.pdfIn PDF document text
    • https://cdn.sqhk.co/fiwujumejuf/jjaqigh/v_moda_crossfade_2_vs_m100.pdfIn PDF document text
    • https://fasilusizewolas.weebly.com/uploads/1/3/5/3/135313848/lavur.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/supefujoxopubu/eagles_injury_report_week_5.pdfIn PDF document text
    • https://s3.amazonaws.com/pajukovuxetu/74228363520.pdfIn PDF document text
    • https://s3.amazonaws.com/migivewuwe/commands_for_windows_command_prompt.pdfIn PDF document text
    • https://s3.amazonaws.com/gupojakami/kamolemetomidadexidaruzep.pdfIn PDF document text
    • https://s3.amazonaws.com/pokorevalaxex/chipstead_valley_primary_school_uniform.pdfIn PDF document text
    • http://folilef.rf.gd/zilolugobedoxusikexa.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_off0000dd22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD22 5480 bytes
SHA-256: c0ee21f8c39bfff162a16fdb8d52accf5953f4fe4f0111ac2a31207167ef0ca8
font_01_sfnt_off0000f008.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF008 9688 bytes
SHA-256: 362d5e9d0ce4194571acd4263f42219f8a8b168bd42bd8c5f82aee1733530ae9

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