Malicious PDF — malware analysis report

Static analysis result for SHA-256 5bc8f33dba589077…

MALICIOUS

PDF

38.4 KB Created: 2020-08-23 09:23:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a9f1c43fd242b63d135bbf87fdba4495 SHA-1: 449f6564bf9398141f2299d987b138559ce9cfab SHA-256: 5bc8f33dba5890770c40cb35919fa97446354488b38f8f2959ecd783a3f62374
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded URLs, with a primary redirector identified as malicious. The document body, though heavily obfuscated, contains text related to 'Kensington park elementary school uniforms' and a malicious URL, suggesting a phishing or scam lure. The presence of a link farm and a redirector indicates an attempt to drive traffic to malicious infrastructure.

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=kensington+park+elementary+school+uniforms In PDF document text
    • http://biramoguv.inspiredwellbeing.com.au/uploads/1/3/2/8/132815176/ce0479078769bc.pdfIn PDF document text
    • http://mujepasu.nomadicivories.ca/uploads/1/3/0/8/130873995/fovewofuxiw_zatajexeg_bozexud_pokagezijexezow.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/1/0435/0532/0088/files/educating_all_students_exam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pigirerunozekolufis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8009/5646/files/jinagiwetipof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0733/6857/files/estrus_cycle_in_cats.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9672/7957/files/jokivexebugipajesetuxir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5581/5583/files/92908888411.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7564/9180/files/satellite_tv_guide_europe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9805/4558/files/79754342821.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4882/8065/files/tavuxabinol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mefopevepal.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 2

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_off0000538e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x538E 5564 bytes
SHA-256: 89ba181e0901323c70bd249ca99d09de4820508db6e8424e810d6154d4bba1c3
font_01_sfnt_off00006659.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6659 11512 bytes
SHA-256: 7fd6e604f6ed8c81b7cb594305c2aafad67a2c1553a7984044659388c29f1d23

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