Malicious PDF — malware analysis report

Static analysis result for SHA-256 53b7687895197a39…

MALICIOUS

PDF

41.0 KB Created: 2020-08-14 23:24:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 84461f548be4fc43bfa1077ea0a0c957 SHA-1: 54fa03c14723687c60e5c4988d43f856206a0b69 SHA-256: 53b7687895197a39bafe8aa9eae009653679ebef57ebe5f41959a6ceaa850a2a
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it directs users to a known malicious URL. Additionally, PDF_SEO_LINK_FARM suggests a large number of external PDF links are present, likely to obscure the malicious intent. The embedded document body contains the malicious URL and several other PDF links, some of which are hosted on Shopify. The primary malicious URL is https://ttraff.cc/pify?keyword=alcazar+seville+audio+guide+worth+it, which likely serves as a redirector to further malicious content.

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=alcazar+seville+audio+guide+worth+it In PDF document text
    • http://files.barnes1ststepft.com/uploads/1/3/2/6/132681891/zosowadugug.pdfIn PDF document text
    • http://zironitel.maryburton.rehab/uploads/1/3/2/7/132710780/da25af3.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/1/0430/0079/1191/files/fasuxireridevexemor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8884/6753/files/mobopavuride.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3273/9989/files/suferi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/9284441163.pdf?v=1594212706In PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9330/2178/files/math_background_image.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1891/0870/files/92315406880.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2950/3901/files/brche_erklrung.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6351/7092/files/calendrio_futebol_2020_19.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/44994208471.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/32343356061.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 5

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_off000061d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61D4 5392 bytes
SHA-256: ff82390eb033dfed50935ef5c057e810bd7f40be7dfb15d3df595c13d1c1b863
font_01_sfnt_off00007434.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7434 10616 bytes
SHA-256: 384d5918fec5f892b41bbfc38f0206c74354f0428fd2f045db2cda2e5993c64d

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