Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d5eb782f1cd7a13…

MALICIOUS

PDF

40.1 KB Created: 2020-08-09 20:08:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 87db6a886d5d5aafb1a1cb817179c0bd SHA-1: 533232ebddb03f055042dad35a95cb924b279f98 SHA-256: 2d5eb782f1cd7a1340012b0887c33dfed77e6a3fb8e2445492cade2cf2b7538f
202 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 of which point to a link farm hosted on cdn.shopify.com, and one critical link to a known malicious redirector at ttraff.com. The document body, though heavily obfuscated, contains text related to 'Formato cfdi 3. 3 pdf', suggesting a lure related to official documents or invoices. The presence of numerous external links and a malicious redirector indicates the primary goal is to lead the user to malicious content.

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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=formato+cfdi+3.+3+pdf In PDF document text
    • http://files.riinabodyart.com/uploads/1/3/0/7/130739693/1f1f325f61e5253.pdfIn PDF document text
    • http://files.myworldrules.com/uploads/1/3/1/0/131070452/0b84070b57e.pdfIn PDF document text
    • http://files.ifugao-archaeological-project.org/uploads/1/3/1/0/131070072/botaluti.pdfIn PDF document text
    • http://files.thielkearboretum.org/uploads/1/3/0/7/130738850/biwetis.pdfIn PDF document text
    • http://sijosekum.creativeyogis.com/uploads/1/3/0/7/130776644/xefalibo-nujema.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/1/0430/7278/2489/files/rutotagofoturojukigokedoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8062/1984/files/89800186583.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/ninitegabi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/1715/4208/files/cutting_edge_upper_intermediate_student_book_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9603/8812/files/noruwaviwikon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3580/4319/files/zoruvidowofizidozowaru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6895/6578/files/lake_of_fire_tab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6910/2485/files/introduccion_a_la_calidad_total_estadistica.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7274/8710/files/anova_minitab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/76640573288.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4325/0588/files/22021568852.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6044/5855/files/dalorozubomabadinezeg.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 6

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_off00005fe9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FE9 5240 bytes
SHA-256: 5b7b117bf37f435c83c521ae36beced2ae7e2ca5806a8f5f10913db529412205
font_01_sfnt_off000071b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71B2 9988 bytes
SHA-256: 33af202714d202f86f03d980ce0bede13090efd65e68462ca3b931c29f9d5656

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