Malicious PDF — malware analysis report

Static analysis result for SHA-256 a85de401e52f2f69…

MALICIOUS

PDF

86.4 KB Created: 2020-08-13 15:46:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8bca2fd27a54801cfb68c035e0e8b003 SHA-1: cfcb7ab33e1c722141dce3f8cab93a1aba3cf1e2 SHA-256: a85de401e52f2f690eb8bf7e838adddb64cc8bba5a6a7055fd80ce1f9c276733
194 Risk Score

Malware Insights

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

The PDF contains a prominent link to 'ttraff.com', identified as a malicious redirector. The document body, though heavily obfuscated, contains the same URL, suggesting it's the primary lure. The presence of numerous other PDF links, many hosted on Shopify, indicates a link farm strategy to obscure the malicious destination. The file's metadata and heuristic firings strongly support a malicious redirector 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=nostra+aetate+pdf+hrvatski In PDF document text
    • http://files.michaelcgavin.com/uploads/1/3/1/3/131381799/3567899.pdfIn PDF document text
    • http://files.awgoldens.com/uploads/1/3/0/8/130814258/rufuguwiwuzu.pdfIn PDF document text
    • http://files.omhathayoga.com/uploads/1/3/0/9/130969897/romomefa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6596/5718/files/diare_akut_pada_bayi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2707/8052/files/4660260360.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9267/9582/files/anemias_carenciales.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8960/0414/files/zizekiboninewajokijeku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8946/1410/files/64417954984.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4364/9698/files/teks_sholawat_burdah.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7246/3772/files/43366651524.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2432/6564/files/33868817301.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3991/5164/files/67108150048.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0455/5816/9765/files/lepezurigobo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6493/3014/files/55286987617.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6065/8330/files/65057172207.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_off0000ffa8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFA8 4872 bytes
SHA-256: 0c429ecaee0be770d4507e5416edd14874e8a5014d608c9b9fbe44c6f42b408b
font_01_sfnt_off0001105a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1105A 15692 bytes
SHA-256: 75c04480215aafd4f492c3f604fe9241738007db876f89d62bb68a37ff826f4a
font_02_sfnt_off00013cfd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13CFD 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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