Malicious PDF — malware analysis report

Static analysis result for SHA-256 14810531b4f5b702…

MALICIOUS

PDF

50.6 KB Created: 2020-10-10 03:17:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 0a4ec4d232803a25faed84440b6f4fdd SHA-1: db7baff3aaf969040aa13a1786778e9badf50c5e SHA-256: 14810531b4f5b702801f8eafbf1d363403f21f2b0cae06718a032188263311eb
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://ggtraff.ru/strik?keyword=d3+demon+hunter+leveling+build+season+21 In PDF document text
    • https://site-1042880.mozfiles.com/files/1042880/damedakusuwoluwomilosiju.pdfIn PDF document text
    • https://site-1038477.mozfiles.com/files/1038477/nomobisifivalesomemozumob.pdfIn PDF document text
    • http://files.key2evolve.com/uploads/1/3/0/8/130874318/zasabuxemer_xawapikiguromik_balasoge.pdfIn PDF document text
    • http://moromaf.historiaflorals.com/uploads/1/3/1/3/131383914/4746979.pdfIn PDF document text
    • http://files.alexanderlawrenceames.com/uploads/1/3/2/8/132814050/rosupeve-vufukoru-kaxute-vebel.pdfIn PDF document text
    • http://wawofut.ridingisgood.com/uploads/1/3/1/8/131857758/360f59288f1.pdfIn PDF document text
    • http://files.utahdesertfoxes.net/uploads/1/3/1/4/131453056/mefezamuwa_pepusukimafelev_zajitarupobodeg.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/1/0437/5658/5121/files/73338715696.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7257/7946/files/representing_linear_nonproportional_relationships_worksheet_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7491/0376/files/malayalam_kambi_katha_free_download_2013.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8865/0146/files/5333432335.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/6884/9828/files/oral_historians_toolbox.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9b07c47c-0b15-49c8-80dc-8681fd76691f/82496976578.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_off000087c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87C9 5784 bytes
SHA-256: 75f6e97f1098361bbab344f6e5a2128ef584fd2a57f836380e76ace3f6bdcde5
font_01_sfnt_off00009b61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B61 10060 bytes
SHA-256: fa80a7a967d698186fd46d8007b84d0f7c66593be652fb8e7457f8cdf4aabfda

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