Malicious PDF — malware analysis report

Static analysis result for SHA-256 be4e78e2b9d333dc…

MALICIOUS

PDF

38.9 KB Created: 2020-08-14 02:37:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3f1bd9cf98ddca75434d86086aa2ddd8 SHA-1: a1bd20a4cfa3df2adf369576d6817ee9befb9f6f SHA-256: be4e78e2b9d333dc540ce271aacbf5d9bb5e34e6be8a219143bc5cbc4b36b15d
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on various domains, including Shopify. One critical heuristic indicates that the PDF links to a known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/wb?keyword=calligraphy%20a%20to%20z%20pdf', which is flagged as malicious. This suggests a link farm or SEO poisoning attack designed to redirect users to 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.ru/wb?keyword=calligraphy%20a%20to%20z%20pdf In PDF document text
    • http://files.olitan.com/uploads/1/3/0/7/130775395/gejifajet_lifov_kezujara.pdfIn PDF document text
    • http://files.elderresourcesofri.com/uploads/1/3/0/9/130969761/766547.pdfIn PDF document text
    • http://files.eleanormcook.com/uploads/1/3/0/8/130873997/5568018.pdfIn PDF document text
    • http://xarafi.laurenpaigekennedy.com/uploads/1/3/0/7/130776023/valajupejovul.pdfIn PDF document text
    • http://files.homewise618.com/uploads/1/3/0/7/130776088/2cf43a5aab87.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/1/0430/0577/1939/files/60962618532.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5467/8687/files/flash_trek_broken_mirror.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7764/0092/files/allan_quatermain_sinhala.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8380/9439/files/8917099578.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/bebupikisanomagidilu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0041/2835/files/bbbp_application_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3239/5423/files/rumizasovubigiwuti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5156/3670/files/poxes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0753/3475/files/theory_of_computer_science_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4503/4911/files/acoustic_analysis_of_speech_kent.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7153/7301/files/zonexewabebokale.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 3

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_off00005bb5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BB5 5180 bytes
SHA-256: 52a201fd4f177ad8f17a2af14d951f502512aaf462ea1fb5d6021ca0aeee8163
font_01_sfnt_off00006d5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D5E 9888 bytes
SHA-256: 8e1561a506d58109e083d15e898a037ced748d428220947c3a030ac49fa734fa

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