Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b6e25b6e22c6db1…

MALICIOUS

PDF

40.8 KB Created: 2020-10-08 20:47:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 6c85c298a5fb92b7b7e49b4fa20709c3 SHA-1: f45837ee1b41e89c5981f58dbf7b62245ceabcaf SHA-256: 5b6e25b6e22c6db160fa7f6aa5bc1ce3333da2990b2ff7a85cfed3eaa1867ff7
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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://cctraff.ru/strik?keyword=te+amarei+para+sempre+dublado In PDF document text
    • http://files.mynarrativeofmusic.com/uploads/1/3/2/6/132681532/dd89855ab.pdfIn PDF document text
    • http://wapepedu.unicaninternational.com/uploads/1/3/1/0/131071021/boguranaxopik.pdfIn PDF document text
    • http://jutuvo.ukerepublic.shop/uploads/1/3/1/6/131606113/3fc6fe12b8.pdfIn PDF document text
    • http://linozuke.therosepetalinn.com/uploads/1/3/0/7/130775364/a85975cd.pdfIn PDF document text
    • http://files.claremooredesigns.com.au/uploads/1/3/0/9/130968985/f7934255f.pdfIn PDF document text
    • https://site-1038349.mozfiles.com/files/1038349/55381826552.pdfIn PDF document text
    • https://site-1041684.mozfiles.com/files/1041684/xabifegujizoran.pdfIn PDF document text
    • https://site-1036821.mozfiles.com/files/1036821/34372435678.pdfIn PDF document text
    • https://site-1042270.mozfiles.com/files/1042270/kidag.pdfIn PDF document text
    • http://files.yeahonline.info/uploads/1/3/2/6/132695644/fe80b.pdfIn PDF document text
    • http://sizosebas.sdschoolcounselors.com/uploads/1/3/1/4/131407283/5455475.pdfIn PDF document text
    • http://files.ambermediatt.com/uploads/1/3/0/7/130775176/mojud_magafiziburib_mefewudi_puvixukajumo.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/1/0430/8297/3346/files/lelasox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0188/8416/files/tipipovuzi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7840/0662/files/vezogiwivopepaneb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/0863/8106/files/forulufiwogejekiputu.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_off00005e83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E83 5196 bytes
SHA-256: 3bfdac41c64d02d413f0f090677da15a01382ef1bd3fb54a6027ebc1e151baae
font_01_sfnt_off00007008.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7008 11952 bytes
SHA-256: d218599fc59aa275ec8fa0b81d3e9f2d61417453235fbff9137ccb17c37a8730

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