Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e5a8cd8dc124ba5…

MALICIOUS

PDF

39.7 KB Created: 2020-08-01 16:14:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 38f41b9569ff989c46b35b9bcd16a08a SHA-1: 457ac6cba5d9cfb63cdaea87995b991a9fcd31fc SHA-256: 4e5a8cd8dc124ba567f238f7959942eb36414254f583268feda115978a3382ef
194 Risk Score

Malware Insights

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

The PDF was flagged by a critical heuristic for linking to known malicious redirector infrastructure via the URL https://ttraff.com/pify?keyword=patrones+de+dise%2525+c3%2525+b1o. Additionally, it contains a link farm of numerous PDF files hosted on Shopify, suggesting an attempt to manipulate search engine results or distribute malicious content. 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.com/pify?keyword=patrones+de+dise%2525+c3%2525+b1o In PDF document text
    • http://files.epiphronresearch.com/uploads/1/3/0/7/130775795/dfca1.pdfIn PDF document text
    • http://files.escondidotreeservice.com/uploads/1/3/0/7/130775214/c01988eb.pdfIn PDF document text
    • http://files.chucktingle.com/uploads/1/3/0/7/130776123/dubepiwidujota.pdfIn PDF document text
    • http://files.albertfpark.com/uploads/1/3/1/8/131871796/6712042.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/1/0428/1466/8959/files/4765098842.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7898/4614/files/pebirowazavuneronubo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0071/7727/files/60936456929.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7120/1695/files/zutiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4359/3109/files/vow_renewal_ceremony_wording.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9252/3675/files/the_haunting_in_connecticut_cast.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7901/6349/files/juxebuvalil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6073/9752/files/nekete.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9371/2286/files/20962997510.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4506/0762/files/tales_from_the_loop_rpg_download.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 7

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_off00005c5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C5E 5492 bytes
SHA-256: 8e444eea0b23b7166cac656bee0193e34749557b84d6bd6e02e751fa3e20b70e
font_01_sfnt_off00006f07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F07 10332 bytes
SHA-256: 574da8b6a56c5c409a5b716fd9d137e8bd5fcffbd8478d107e5150dbae6f8853

Open this report in the interactive analyzer, or submit your own file for analysis.