Malicious PDF — malware analysis report

Static analysis result for SHA-256 2648216470492f4b…

MALICIOUS

PDF

48.0 KB Created: 2020-08-19 01:44:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 1ea2d2382e9e80e40e8749b4717e3d2c SHA-1: 7e177066190f3f7d777749e2d28743e9dea7a4f8 SHA-256: 2648216470492f4b3db749fe3e1a491079935ed6d8cd2fb9a223a2fd0cd16364
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://ttraff.ru/pify?keyword=nomenclatura+quimica+inorganica+ejemplos+pdf In PDF document text
    • http://bamasutob.frompapagod.com/uploads/1/3/1/4/131406086/sexudipupijadipe.pdfIn PDF document text
    • http://lavumebib.natrulay.co.uk/uploads/1/3/1/8/131856543/d8557e9eda117a4.pdfIn PDF document text
    • http://files.ace-coop.org/uploads/1/3/1/4/131437535/9178512.pdfIn PDF document text
    • http://metem.inspirationplantation.com/uploads/1/3/1/4/131454859/3753352.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/1/0433/8457/0019/files/75952437400.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1644/4315/files/synonyms_in_english_language.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0097/8853/files/gogonibidabix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3426/4220/files/aldehydes_and_ketones_mcq.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5282/5750/files/29064798272.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9465/3594/files/kalank_movie_hd_video.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6196/8025/files/vadelojutagunu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4680/5408/files/75371798795.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5609/4615/files/risodava.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0004/4440/files/beginner_guitar_music.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6612/2662/files/fifagonuvo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1897/7443/files/18427152920.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8656/0936/files/29193661375.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 3

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_off0000793f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x793F 5648 bytes
SHA-256: 7dac9bf014a8bbfbb3cf5732797fe95a080acaf6460ce995e10e6eea758426e4
font_01_sfnt_off00008c4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C4F 11568 bytes
SHA-256: bf53187d5a70e88a2a3f5dcd356431bc18fdcf331e7155365224c9b1fee79a46

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