Malicious PDF — malware analysis report

Static analysis result for SHA-256 023b9ca06166bacb…

MALICIOUS

PDF

34.0 KB Created: 2020-08-16 01:09:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 28563704f9f9b477ccbee2b567ca6299 SHA-1: d80ec692d5f1859ec54b6b26122b09a3048b87bc SHA-256: 023b9ca06166bacbe9d04a60f033146585fc732964e897519f3892ab4ca4310f
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file contains numerous links, many of which point to a redirector infrastructure associated with malicious activity. The document body, though heavily obfuscated, contains URLs that are likely part of a link farm or phishing campaign, aiming to direct users to malicious sites. The ML classifier also strongly indicated maliciousness.

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=java+numberformat+locale+brasil In PDF document text
    • http://wesepojud.letspartybouncers.com/uploads/1/3/1/6/131637308/xavegov-zozifukofolek.pdfIn PDF document text
    • http://jabowal.gillespiecoalmuseum.org/uploads/1/3/1/6/131636725/b7d394b1c0996e.pdfIn PDF document text
    • http://files.beyoungdesign.com/uploads/1/3/2/6/132695719/moxilatuvuku.pdfIn PDF document text
    • http://files.garnavilloia.com/uploads/1/3/2/6/132695513/c53323f.pdfIn PDF document text
    • http://fagivora.aakashsinghrathore.com/uploads/1/3/0/7/130776031/d6e58152d6f.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/1/0440/0922/6398/files/php_foreach_array.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8722/4214/files/larokezikeb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2692/2146/files/98763911302.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0703/9912/files/xenozawatijeditelofoli.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1782/2620/files/sumuxunaxowukokoleb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2197/5197/files/78530265890.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/7079/8489/files/tarifinulapukugasidaxigo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5493/0839/files/linear_equations_and_inequalities_worksheet_answer_key.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2259/7800/files/mapamundi_para_colorear_con_nombres.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7588/7523/files/76822198450.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5956/0094/files/hp_probook_440_g5_i5_datasheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7410/1160/files/37929988604.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 4

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_off000049d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x49D4 5216 bytes
SHA-256: c24dabb1330689472947ac87522b10c7adc180d9d31e89651d2c835004efab0e
font_01_sfnt_off00005b82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B82 9232 bytes
SHA-256: aa5953d55eb14b17cc113fba42f9c607de6b01da970fe4faef36badf6bdba66f

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