Malicious PDF — malware analysis report

Static analysis result for SHA-256 06f234105914060d…

MALICIOUS

PDF

44.6 KB Created: 2020-10-02 13:08:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 4ca715b291a86fcacb7ca5bc9c31427a SHA-1: fd39419e7d8b46db643261cf6be81ffe359b43af SHA-256: 06f234105914060d285d12541d9808fff0a4b31e1313b14a2ceb9944cdb980f5
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.
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not 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://ttraff.link/pify?keyword=what+does+wym+mean+in+roblox In PDF document text
    • http://miluv.vichiswim.com/uploads/1/3/0/8/130873804/09f32.pdfIn PDF document text
    • http://bujifo.unleashthefunatrudys.com/uploads/1/3/0/7/130775376/fanupo.pdfIn PDF document text
    • http://dunaziv.robohounds.com/uploads/1/3/2/3/132303359/b66c83.pdfIn PDF document text
    • http://ruguregu.thirdwatchpublicsafetyequipment.com/uploads/1/3/1/4/131453853/lulexupe_rotoruwo_paporegarol.pdfIn PDF document text
    • https://site-1036713.mozfiles.com/files/1036713/66108091039.pdfIn PDF document text
    • https://site-1037143.mozfiles.com/files/1037143/40813289313.pdfIn PDF document text
    • https://site-1038827.mozfiles.com/files/1038827/15240242752.pdfIn PDF document text
    • https://site-1037172.mozfiles.com/files/1037172/donumivaboderubis.pdfIn PDF document text
    • https://site-1037124.mozfiles.com/files/1037124/vafadolesu.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/1/0437/4410/0506/files/nunojafilaji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/7718/4919/files/trigonometry_exam_with_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5733/9803/files/67299443624.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/1818/6663/files/zotidaseninebogiwibumadu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/7698/0378/files/74773399539.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8749/5321/files/71430990245.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_off00006f8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F8C 5480 bytes
SHA-256: 65ea20da1dee4e3c244e2aea3b2daba929b4226bc6d892f60c88668b3cbc2b35
font_01_sfnt_off0000821d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x821D 10420 bytes
SHA-256: d63b18a33ee77240b9c8d726559a48af3f0a55d73e14560f9c5f2ddd73037f5f

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