Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f43ccf5c3d4843d…

MALICIOUS

PDF

41.5 KB Created: 2020-08-18 14:13:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 21b0a56fc8c981e8fe3bc0813b43af02 SHA-1: 268d67bb18f92355b99a1f4b78f79e82b6aa14f9 SHA-256: 5f43ccf5c3d4843df5dba6796d2a9e906aeba1bf9b4dea029ebcd528507e18ee
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links and a prominent URL within the document body, all pointing to a redirector service. This service is likely used to obscure the final malicious destination, which is probably a phishing page or a malware download. The heuristic firings strongly indicate malicious redirector and link farm activity, suggesting a phishing or malware distribution attempt.

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.cc/pify?keyword=apache+tomcat+8.+5+for+windows In PDF document text
    • http://files.budget-georgia.com/uploads/1/3/1/4/131483148/34629857.pdfIn PDF document text
    • http://files.tobincosten.com/uploads/1/3/1/3/131379312/limovegolebe.pdfIn PDF document text
    • http://lojesedu.bankersumbrella.com/uploads/1/3/1/4/131407995/a5492a4f.pdfIn PDF document text
    • http://bebekori.elecflex.greatwebsitebuilder.com/uploads/1/3/1/6/131606490/6906689.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/1/0435/8828/8675/files/future_will_going_to_present_continuous_present_simple_exercises.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1537/2953/files/89862797825.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/44329390643.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6497/5765/files/geographical_indication_act_2013_bangladesh.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2600/4642/files/8254226930.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1515/9458/files/bojeku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2778/4099/files/disulagogosag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/91300886864.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0188/8416/files/sahih_bukhari_hadith_in_english.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5129/4619/files/38307522934.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8862/5316/files/employee_awol_letter_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4752/6305/files/48273745129.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 1

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_off00006301.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6301 5792 bytes
SHA-256: 96782cc476869ad066a66ad2030cc577db88ffde67126d88d3c1607d6e14d15b
font_01_sfnt_off000076ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76AB 10016 bytes
SHA-256: 6f2596a928d6c9de6a43444eb15a4e58f37dbb96005528d6ea7fc2f38f517191

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