Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7df45ed2348073a…

MALICIOUS

PDF

44.4 KB Created: 2020-08-08 18:44:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f4e7a0e7e2c3437ecf64edd24a57a3a7 SHA-1: f340ba32b453b3754b402c8339a288c2d77bfb0d SHA-256: b7df45ed2348073afdcfd397c4eb797ec8dce0ec1aa7ca712603f6424b942dc8
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, which is characteristic of SEO poisoning or link farm abuse. One critical heuristic identified a link to a known malicious redirector at 'ttraff.com'. The document body, though heavily obfuscated, contains the same URL, suggesting the primary intent is to direct users to malicious infrastructure. No scripts were extracted from this sample.

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=dividing+words+into+syllables+pdf In PDF document text
    • http://files.sharonreeddesigns.com/uploads/1/3/1/3/131397960/8080745.pdfIn PDF document text
    • http://files.covingtonnazarene.com/uploads/1/3/1/3/131398097/lajelili_kofateboxasub_xunovu_kubovipig.pdfIn PDF document text
    • http://files.houseofdiamondsphxdior.com/uploads/1/3/1/4/131453429/tetupuko-nomede-duvezuzusiximun-nizuxunikovos.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/1/0432/6090/3582/files/nowunejo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7300/3939/files/virtual_piano_keyboard.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3277/1734/files/beline.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3025/7568/files/creating_a_discord_server.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8153/9489/files/92156980881.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5247/4280/files/zatapinotigajolifapu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0182/1859/files/merorefala.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3480/2333/files/babylonian_talmud_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0595/9574/files/5873554830.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2009/0535/files/jonadijopurikozukuwu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4597/6224/files/wetebafefu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5385/8472/files/80768520301.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0342/9535/files/junelejovevapi.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006e95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E95 5604 bytes
SHA-256: 8e345eb5ab2face5b1ec2a339b71cfbf198ec5fec75d326bdedf3e7c5a8611a6
font_01_sfnt_off000081d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81D2 10376 bytes
SHA-256: 861c522bb40488cc16c46217e473c7cff689a32b783bc4a3177695642f6bd4c4

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