Malicious PDF — malware analysis report

Static analysis result for SHA-256 49f23f4c79df818c…

MALICIOUS

PDF

69.4 KB Created: 2021-02-09 13:51:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 499a5dea224e4602184e3af5b8dc342c SHA-1: 3ad00489531c8308faa90867a15ae1099a88534e SHA-256: 49f23f4c79df818c2cff10b3e52f67da0657b878656283110230147485b7637a
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://leonvi.ru/wb?keyword=bargain%20formal%20dresses PDF link annotation
    • https://suzotavuni.weebly.com/uploads/1/3/4/7/134765747/zikorafu.pdfIn PDF document text
    • https://wixotavu.weebly.com/uploads/1/3/4/7/134764887/dosizajuwo.pdfIn PDF document text
    • https://selokifasafu.weebly.com/uploads/1/3/4/3/134383977/nowesovosiv.pdfIn PDF document text
    • https://pubategikosiw.weebly.com/uploads/1/3/4/1/134131453/010c6f266f8c.pdfIn PDF document text
    • https://xasigali.weebly.com/uploads/1/3/4/3/134363336/96939.pdfIn PDF document text
    • https://vamemaxodoj.weebly.com/uploads/1/3/1/4/131437173/doxaz.pdfIn PDF document text
    • https://gavedomosuzutu.weebly.com/uploads/1/3/4/2/134234743/gumogiridufaxazo.pdfIn PDF document text
    • https://wugepazi.weebly.com/uploads/1/3/4/3/134348030/b2f16.pdfIn PDF document text
    • http://barojenixumaja.iblogger.org/business_card_template_publisher_2016.pdfIn PDF document text
    • https://wezalowesugalu.weebly.com/uploads/1/3/2/8/132815960/1ea19605449.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/faxaxos/besame_mucho_guitar_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/xefejevife/30958808974.pdfIn PDF document text
    • https://s3.amazonaws.com/takebemanijewok/ludeluzixomujulujefub.pdfIn PDF document text
    • http://xipitidugizen.rf.gd/83205470584.pdfIn PDF document text
    • http://wowulikuvej.rf.gd/nhtsa_sfst_student_manual_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/fenatagazise/altis_life_5._0.pdfIn PDF document text
    • https://s3.amazonaws.com/sefabe/numebozomu.pdfIn PDF document text
    • https://s3.amazonaws.com/poguvelefa/extent_report_for_testng_parallel_execution.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d6a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6A4 5276 bytes
SHA-256: 7c493f38c23b2feadcc5a93de7b41c2ba46ba4771e88f9f55370c2c5b127f2b8
font_01_sfnt_off0000e884.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE884 9528 bytes
SHA-256: 3b76d4ceefddd4e23f0fa7a75b16a537cf1fcca41ea0f0b79492817a8306d7cc

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