Malicious PDF — malware analysis report

Static analysis result for SHA-256 38e042e2583b33ac…

MALICIOUS

PDF

57.7 KB Created: 2020-08-10 21:50:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8687a25ba6da4dd9bd51c2fb3c9e932a SHA-1: 4da7f1b11dc513a6978726020296aa4897e7f81e SHA-256: 38e042e2583b33ac4579d1b8ec4961e225db9fe03d73b9710f5a6799b503a2a2
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/pify?keyword=anestesia+regional+intravenosa+pdf'. This indicates the document's primary purpose is to redirect the user to a malicious site. The PDF also contains a link farm heuristic, suggesting it's part of a larger SEO poisoning or link spam campaign. No scripts were extracted, but the presence of a malicious redirector is sufficient to classify the attack pattern.

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=anestesia+regional+intravenosa+pdf In PDF document text
    • http://files.atherstonegallery.co.uk/uploads/1/3/1/3/131398449/tadomojadukifej_fusizewib_vegiwuxunufetiz.pdfIn PDF document text
    • http://files.castleofgeckos.com/uploads/1/3/0/9/130969001/1413146.pdfIn PDF document text
    • http://files.elliotgardner.com/uploads/1/3/1/4/131453484/e753adcf.pdfIn PDF document text
    • http://fontawesome.iohttp://fontawesome.io/license/In 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/1/0435/1596/9688/files/99939461842.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6820/2901/files/57181626931.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9997/1999/files/77649580310.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/67142307476.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1745/3211/files/65038206227.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1677/4054/files/60592391244.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7519/0422/files/54893549803.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9222/9797/files/sama_veda_sandhyavandanam_book_in_tamil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9395/8560/files/53873090923.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2396/5079/files/divuliz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1220/9314/files/core_exercises_with_medicine_ball.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000093dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x93DD 1916 bytes
SHA-256: c412534dfc68dea2645a84de32c043ab33df36409d4d8d98851f47475602f651
font_01_sfnt_off00009d0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D0C 5256 bytes
SHA-256: b6be224c626442491821e5249ec37cd27eaa614880e564bc66ad3c70f31864fb
font_02_sfnt_off0000aefc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAEFC 13416 bytes
SHA-256: 4dc01f05b53120b150a0206309a8f5ffbba6963e52f2c6033ed0b641214b15f0

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