Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3b2a05177c21e9b…

MALICIOUS

PDF

44.1 KB Created: 2020-10-07 10:17:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 88b93567ee5f35774c76136d8c67cd92 SHA-1: a604d4769c43d07613482eaa3935c0c33e4a8d5e SHA-256: d3b2a05177c21e9b072285559dc9c5b0088f1f86413697616f6bc669617945d2
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • 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://gettraff.ru/pify?keyword=dell+compellent+enterprise+manager In PDF document text
    • http://kirifesim.buffalogapquarterbackclub.com/uploads/1/3/0/7/130739706/1359997.pdfIn PDF document text
    • http://files.twolabyrinths.space/uploads/1/3/0/7/130739713/54aaa74b294c.pdfIn PDF document text
    • http://files.katherinebolynn.com/uploads/1/3/1/4/131437984/b1e7f7624f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4394/5622/files/nojavegejeponeloje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/4338/0122/files/world_in_the_balance_the_population_paradox_worksheet_answers_japan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/8637/1752/files/big_brother_albania_3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7463/4403/files/que_es_la_vida_contemporanea.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/0403/4712/files/contemporary_classics_study_questions_animal_farm_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8e1142f6-d855-4a9e-bac3-efb6d4543333/bepabosuro.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bae55424-ecfe-4a49-97d5-56328fb0d6d8/refuxexivajoruxixaxeloso.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/66eb123f-e103-4b6d-8915-769966016ade/443015615.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_off000066f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66F7 5252 bytes
SHA-256: 3318b5cfda1559c55533ac1612fc53a3fb091a38c33a0ed129360c5692d6f3d4
font_01_sfnt_off000078c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78C3 13444 bytes
SHA-256: e0a241b13b55fe8217e3ef26143f6271a587c0db94b17aeea614d05e98a8844c