Malicious PDF — malware analysis report

Static analysis result for SHA-256 1460392d4b0c412e…

MALICIOUS

PDF

71.6 KB Created: 2021-01-29 04:12:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: f216bba6f422f41b802c47afe3eb1bae SHA-1: 159aaa6404ffdc71dc1ea7239489bd5a5589442c SHA-256: 1460392d4b0c412ee0f32454a5b2f70a91a957163c760bcb9135fcaa53568614
254 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
  • 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://yafferge.ru/123?utm_term=general+electric+universal+remote+24991+codes In PDF document text
    • https://cdn.sqhk.co/bamazaludez/g4p3Wjb/pisolulepizovazokovigupu.pdfIn PDF document text
    • https://cdn.sqhk.co/feripamapuv/WUhbzlO/the_sims_freeplay_quests_2019.pdfIn PDF document text
    • https://cdn.sqhk.co/geroterunetu/hshfggd/lusujivimegabexezutupi.pdfIn PDF document text
    • http://varistop.site/11154626292ctphh.pdfIn PDF document text
    • https://gupapuna.weebly.com/uploads/1/3/4/7/134726568/7198170.pdfIn PDF document text
    • http://reduslim-shop.site/livelo3zbvp.pdfIn PDF document text
    • http://kismykeitio.best/xevajepewokomusexiapfdt.pdfIn PDF document text
    • https://cdn.sqhk.co/dusimefosix/icjgibH/37888752040.pdfIn PDF document text
    • http://apparently-home.com/waxogimawodedifojocg01p.pdfIn PDF document text
    • https://lakofanagobogan.weebly.com/uploads/1/3/5/3/135386994/dosebotudu.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/najubu/lasisuvojatuganasifaremo.pdfIn PDF document text
    • https://s3.amazonaws.com/baxadelefofibuz/dirleton_primary_school_hmie_report.pdfIn PDF document text
    • http://litaxuroba.rf.gd/lexington_ma_weather_report.pdfIn PDF document text
    • http://xawavejemefo.epizy.com/vifinaboriwabo.pdfIn PDF document text
    • https://s3.amazonaws.com/sogovekevi/sosed.pdfIn PDF document text
    • https://s3.amazonaws.com/nazekisigiduz/tejupinavemumizewosomu.pdfIn PDF document text
    • https://s3.amazonaws.com/sojebelevenex/tools_for_formative_assessment_in_scholastic_domain.pdfIn PDF document text
    • http://kelawezup.rf.gd/gabokotusuzazate.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_off0000db5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB5F 5604 bytes
SHA-256: 1c96b0b87a09019040de7abe7cc4788f03a4303401788a592efdebb22ebe4e8a
font_01_sfnt_off0000ee62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE62 10188 bytes
SHA-256: 8e3816b1c249976664d3c4b7f33bd0d147d96b7cea9eff4ce2e8180c30eadbb3

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