Malicious PDF — malware analysis report

Static analysis result for SHA-256 084b140d1eda596b…

MALICIOUS

PDF

43.2 KB Created: 2020-08-17 15:06:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 977cf567c2527e16e2e315c39e668357 SHA-1: c2c70f685f80d53f0e57b75192f74228c2e32815 SHA-256: 084b140d1eda596be46bbc68a25a2cdf5da87a08bf51fb1c93ef2abac6446a70
194 Risk Score

Malware Insights

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

This PDF document contains numerous links, many pointing to a redirector service, suggesting a link farm or phishing campaign. The document body text, though garbled, includes keywords related to 'uniformes mais bonitos copa 2018' and a URL that appears to be the primary lure. The ML classifier strongly indicated maliciousness, and the presence of redirector links supports a malicious intent, likely to lead users to malicious sites or download further payloads.

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=uniformes+mais+bonitos+copa+2018 In PDF document text
    • http://files.blwcenter.org/uploads/1/3/0/7/130740323/8794972.pdfIn PDF document text
    • http://tenijebu.flaniganssportsworld.com/uploads/1/3/1/0/131069839/2410791.pdfIn PDF document text
    • http://files.fringeboutiqueto.com/uploads/1/3/1/6/131607810/670534.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/1/0434/0544/3237/files/renunciation_of_executor_form_north_carolina.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0515/5227/files/nex_informatique_chalon_sur_saone.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5063/0296/files/xibitibelibigima.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8194/8567/files/caregiver_burnout_scale.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6488/3355/files/applications_and_uses_of_computer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8069/4437/files/xijerolevevekuvozurimez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5580/0739/files/great_american_hero_cast.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/vitalifurefafimeribedewo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/koxumugude.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_off000065a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65A4 5780 bytes
SHA-256: 0dffc17a3fb477246ee51493a03ceb6c75c213e990eeea0452699fae1b749b9c
font_01_sfnt_off0000793f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x793F 12412 bytes
SHA-256: 56dd22813b1f44792c63debe354354ea1fda3ef2d1e3ff3626dfdd2d9a4a6e4b

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