Malicious PDF — malware analysis report

Static analysis result for SHA-256 d58492bd5772766d…

MALICIOUS

PDF

49.0 KB Created: 2020-10-20 16:54:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: b023a5891eb957b4b6beb195d229b1e6 SHA-1: 74b28e4eb05ae7e65887fa4a91e383d293f37d30 SHA-256: d58492bd5772766dd46f426ed945bfdad341069125047072a719461d0ed524b3
234 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://cctraff.ru/123?keyword=hacking+wifi+android+no+root In PDF document text
    • https://pitimonajavigo.weebly.com/uploads/1/3/1/3/131383860/vafefazifubogez.pdfIn PDF document text
    • https://tumixivig.weebly.com/uploads/1/3/1/6/131636813/toniviboful.pdfIn PDF document text
    • https://labajilawuja.weebly.com/uploads/1/3/1/4/131406369/vakezo_kifakavusinu_sodowubifuxu_vekawe.pdfIn PDF document text
    • https://wojedebaroz.weebly.com/uploads/1/3/1/6/131637691/gunenogeke.pdfIn PDF document text
    • https://netaluzubik.weebly.com/uploads/1/3/0/8/130813777/xamilisi-jukadimovoz.pdfIn PDF document text
    • https://zegojipoxe.weebly.com/uploads/1/3/1/0/131069766/jujaxukupeka-lifem-katitetaz-nuvid.pdfIn PDF document text
    • https://medizagokitoni.weebly.com/uploads/1/3/2/3/132303310/pujogabedisuna.pdfIn PDF document text
    • https://sirawomaperuli.weebly.com/uploads/1/3/1/3/131398091/6110a0c5.pdfIn PDF document text
    • https://xivenisulebitok.weebly.com/uploads/1/3/1/3/131378814/02779f3c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366031/normal_5f8c25607fab5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365660/normal_5f870cb982fc2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370319/normal_5f886ad64858a.pdfIn PDF document text
    • https://xonuvalax.weebly.com/uploads/1/3/1/4/131437330/wipefogifabarazo.pdfIn PDF document text
    • https://relogeseji.weebly.com/uploads/1/3/0/7/130739887/2107023.pdfIn PDF document text
    • https://xifobosakup.weebly.com/uploads/1/3/2/8/132815359/48a8ea.pdfIn PDF document text
    • https://tivakoxidedopa.weebly.com/uploads/1/3/0/7/130776298/labov_gakas_keraj_tikolatakurimu.pdfIn PDF document text
    • https://netaluzubik.weebly.com/uploads/1/3/0/8/130813777/nebexipox.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/1/0484/9670/5691/files/free_music_theory_worksheets_for_beginners.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/5268/6248/files/lesson_of_the_kaibab_video.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0503/3813/6232/files/71141343950.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0464/5129/4376/files/graco_snugride_35_expiration.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/4303/1702/files/bexolununibikikesituk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/9879/0811/files/jibeze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8896/0933/files/nekisa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0895/8362/files/womens_jobs_in_1800s.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/7870/8117/files/maths_differentiation_questions_and_answers.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_off00008174.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8174 5096 bytes
SHA-256: e3b49807adb62b7b3db01cd802d32a3c713db73cf63647deacdbde296a960be3
font_01_sfnt_off000092e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92E1 10264 bytes
SHA-256: 5fc311c66558a2e2c646f391c9a008dc5eef02e39792f0aedad6c5cc7ecfc31c