Malicious PDF — malware analysis report

Static analysis result for SHA-256 a53fa5a3fbb70e7b…

MALICIOUS

PDF

44.8 KB Created: 2020-08-15 05:27:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e058ba92b5b30d9dcf422bb1091133f3 SHA-1: cbad251c9b0dc4bec3f96faa287b074fe50efd82 SHA-256: a53fa5a3fbb70e7bd3895af92d486cab48a53729513138bd1950c08518398a2d
202 Risk Score

Malware Insights

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

The PDF contains embedded JavaScript and a critical heuristic firing for a malicious redirector link pointing to ttraff.com. This indicates the document is designed to redirect users to a malicious site. The presence of numerous other PDF links, many hosted on cdn.shopify.com, suggests a link farm or SEO poisoning attempt to increase visibility. No scripts were extracted, limiting the analysis of specific malicious actions beyond redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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/wb?keyword=rachel%20carson%20primavera%20silenciosa%20pdf In PDF document text
    • http://files.jennakoyama.com/uploads/1/3/1/4/131407148/0f4ccec686d5f.pdfIn PDF document text
    • http://files.angelatipsey.com/uploads/1/3/1/0/131070918/3564eb8082.pdfIn PDF document text
    • http://files.neudimensionz.com/uploads/1/3/2/6/132696598/gebufabu_dudet_metule_zowase.pdfIn PDF document text
    • http://files.shirleypeppersart.com/uploads/1/3/1/6/131637218/teruxinareguku.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/1/0438/6563/7019/files/vanazufedana.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3066/6651/files/capability_curve_of_generator.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2992/8863/files/leed_v4_green_associate_candidate_handbook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5936/3488/files/pdf_to_ms_word_editor_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5461/2123/files/72526431230.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6125/6096/files/96755215436.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0445/3846/2372/files/insert_into_postgre.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4987/6641/files/arrl_technician_study_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0760/5910/files/7991652969.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 8

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_off00006ea2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EA2 5460 bytes
SHA-256: e96d0f086bead689bdfc71de75f40ff9e44bcc3c84ce643d63ec8d92c50a0442
font_01_sfnt_off00008105.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8105 10536 bytes
SHA-256: 0a3d1620220483960d6948fd3f59e44993c53e0c50012b0feb1b9c31e694316f

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