Malicious PDF — malware analysis report

Static analysis result for SHA-256 b40f9a354125a4c9…

MALICIOUS

PDF

77.2 KB Created: 2020-08-16 13:50:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f1d93c3732c8824188521847aa15e262 SHA-1: 8ee9d2d7d393705c37584b2cc765bf95a90763f8 SHA-256: b40f9a354125a4c97d9eadd660d265ceea9225e4081aa8a3ebd591b1f3ac692b
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to Shopify domains but are likely part of a link farm to improve SEO for malicious content. The primary heuristic firing indicates a direct link to a known malicious redirector at 'ttraff.com'. The ML classifier also strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains the primary malicious URL, suggesting a lure to a malicious site.

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/wb?keyword=poway%20bmp%20design%20manual In PDF document text
    • http://files.namiracinecounty.org/uploads/1/3/0/7/130776661/rugewatezanof.pdfIn PDF document text
    • http://wifof.lisaloguebooks.com/uploads/1/3/2/6/132695531/munuxexemodojobiwolu.pdfIn PDF document text
    • http://files.mtzionholychurchde.org/uploads/1/3/1/0/131070604/8116094.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/1/0433/9869/3013/files/kalnirnay_calendar_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6656/4507/files/vivexegegoputegurugemoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9340/2534/files/36560202503.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5072/9634/files/normalidad_y_anormalidad_epidemiologia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7899/1513/files/alfa_laval_purifier_overhaul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lalosukiwafigoledexefes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8362/0757/files/synonyms_for_common_words.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8175/1964/files/como_cambiar_de_a_word_en_mac.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7176/6690/files/89054136965.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5628/3296/files/dodizefap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2862/7107/files/28342139892.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9712/9109/files/lupun.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 4

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_off0000f244.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF244 5520 bytes
SHA-256: 80d3662e283dba43a712c2b2a2eeb1bcd4954673601f481154ec24330b494e8b
font_01_sfnt_off00010504.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10504 10256 bytes
SHA-256: 3aa3d808389774b1f69afd3ee2e1746cfc9cf7d31bed36ec05a66404aac8c347

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