Malicious PDF — malware analysis report

Static analysis result for SHA-256 ccfa2111a55d98c8…

MALICIOUS

PDF

56.7 KB Created: 2020-10-09 15:43:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: d10c28ed9d27c1bcddfd09b551889893 SHA-1: 9050de72f98d7a3747181529e52520cb77a973cd SHA-256: ccfa2111a55d98c84c8318ecae766568d2d8988df5ef0e1b772e6026b0e58c0a
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=tea+direct+sales+companies In PDF document text
    • http://sinedan.dhdesignfirm.com/uploads/1/3/2/7/132740669/4384804.pdfIn PDF document text
    • http://files.oxfordshirekickboxing.com/uploads/1/3/1/0/131070112/nolabov.pdfIn PDF document text
    • http://wojoneruv.yourpicturefixer.com/uploads/1/3/0/9/130970023/darunisitonum.pdfIn PDF document text
    • http://files.austinsstudio.com/uploads/1/3/0/8/130874317/nofevijikef_zipusu_vonowirije.pdfIn PDF document text
    • http://files.akpartnership.org/uploads/1/3/1/6/131607310/nawexofu.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off000091fb.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off000091fb.bin)
    • http://www.daltonmaag.com/In extracted file (font_02_sfnt_off0000c77d.bin)
    • https://uploads.strikinglycdn.com/files/8dc33384-df4f-464c-8e74-72f473012de7/subipojemamarij.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f2a42bfd-76e0-4a6a-a24a-d4ecc299fe39/vosusafoxeri.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/73947da7-c89b-46f0-b9c4-5ee9a0ff5b5b/297183344.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7579d87f-9547-4196-a051-39a06f417980/85590880369.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/4086/6204/files/65976135925.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8787/9587/files/daguji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/8045/7623/files/viking_range_specs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/0715/8690/files/ray_ban_3447v_silver.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b7cc3e7a-fc76-4e24-89e1-64f4d186b0bc/dobekiwewojasebutetos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f7fbc0ab-1030-4184-8ae2-c3b3e4116d26/56361367750.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 extracted file (font_00_sfnt_off000091fb.bin)

Related samples 7

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000091fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91FB 4956 bytes
SHA-256: d46be18993eb35af1d62df9562fe2d90d03709eb93b8cf755f568fa603bf21d0
font_01_sfnt_off0000a2aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA2AA 10796 bytes
SHA-256: 2000b39ea6dd2f91ec246fdc3d48cd1357c3cd93eab98b473248f446cf95c6cb
font_02_sfnt_off0000c77d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC77D 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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