Malicious PDF — malware analysis report

Static analysis result for SHA-256 309b519dedd98d59…

MALICIOUS

PDF

68.9 KB Created: 2021-02-17 00:55:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 349b939e4a4f9c87d2532463b1d5e3af SHA-1: 43b189926ea94360c639da4e720a990718d2c703 SHA-256: 309b519dedd98d59057379958d01c905ff3a091d924afcf38d1bb69de9b12d09
186 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://druttle.ru/wix?keyword=tru+testo+fuel+platinum+website PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4476007/normal_60157ef1f1ede.pdfIn PDF document text
    • https://dilipifoson.weebly.com/uploads/1/3/1/0/131070096/6872634.pdfIn PDF document text
    • https://sojagimizalafar.weebly.com/uploads/1/3/5/3/135317111/5337148.pdfIn PDF document text
    • https://gakubuzavesow.weebly.com/uploads/1/3/0/8/130813888/3c8554db0050d2d.pdfIn PDF document text
    • https://mepovokure.weebly.com/uploads/1/3/0/9/130969824/wifumaxal.pdfIn PDF document text
    • https://rujijixagav.weebly.com/uploads/1/3/1/3/131383475/jozimajafa_toguruvekixe_bajeno_wasaf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409093/normal_5fd8dc13278e7.pdfIn PDF document text
    • http://aycotoro6.xyz/decrypt_md5_senha_em_mysqlwx9vp.pdfIn PDF document text
    • https://poroxokinawutaj.weebly.com/uploads/1/3/4/5/134507376/9143594.pdfIn PDF document text
    • https://sujujiga.weebly.com/uploads/1/3/1/3/131379538/foleporosen.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/lodazojamuva/avast_antivirus_for_pc_free.pdfIn PDF document text
    • http://nadezuj.epizy.com/netacad_linux_chapter_8_exam_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/purixifusipelid/85883690933.pdfIn PDF document text
    • https://s3.amazonaws.com/gofilafixu/mudekofebexanufo.pdfIn PDF document text
    • http://tesalivolanimeg.rf.gd/joined_up_writing_printable_sheets.pdfIn PDF document text
    • http://fositelorefux.epizy.com/vaxepinaloligovefer.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_off0000d1dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1DC 5228 bytes
SHA-256: 6fffdb650c66672aeaf7cec5965fa2790a890041d039c5b6eb9225b9c42b03c1
font_01_sfnt_off0000e39b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE39B 10316 bytes
SHA-256: 0db6a5099406d2f018eda902a8091500a7c52f647fce61a8e34527a4453b0f39