Malicious PDF — malware analysis report

Static analysis result for SHA-256 5556342a3b62b8ce…

MALICIOUS

PDF

125.5 KB Created: 2020-08-27 22:57:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 63e0caac8b126b2ba6fd50d96e178987 SHA-1: 1a3e859216972c36b1aa972a226c768c0e25303d SHA-256: 5556342a3b62b8ce059f81fbd2209d20231621971ac1bfc2a8e5c409416f0573
194 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, ttraff.com, which is likely used to obscure the final destination of the malicious payload. The document body, though heavily obfuscated, contains text related to 'Instalaciones sanitarias en edificio' and the malicious URL, suggesting a lure. The presence of a PDF link farm further indicates malicious intent to distribute links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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=instalaciones+sanitarias+en+edificio In PDF document text
    • http://zotiti.brooklyndreadlocks.com/uploads/1/3/0/8/130814328/saxuvaxalulik.pdfIn PDF document text
    • http://roronawop.haddac.co.nz/uploads/1/3/1/0/131070420/994825.pdfIn PDF document text
    • http://bodekeveb.dw-treeservice.com/uploads/1/3/1/4/131407406/2349007.pdfIn PDF document text
    • http://files.gbyws.org/uploads/1/3/1/4/131483019/paludizixi-pazibokadelok-xovubonavegazuz-nobuxudisapefod.pdfIn PDF document text
    • http://fontawesome.iohttp://fontawesome.io/license/In 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/1/0440/2449/6286/files/fdcpa_letter_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1221/1359/files/vovugakirim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8129/3221/files/donuxolutogopigazedol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8316/0995/files/62048847044.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0443/9041/6550/files/gezewixuvemiwolemofeko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7728/0671/files/52733817477.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2537/3083/files/printable_brain_teasers_worksheets_with_answers.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001949f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1949F 2756 bytes
SHA-256: 97623e092b01102f33f136309d44ca8081881e16c62ac2ca2e6674cf8ea0b2f7
font_01_sfnt_off0001a07a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A07A 4952 bytes
SHA-256: 4a77e014346703966ff730d88b3417be69a29bd62a73fff84cc091a873947256
font_02_sfnt_off0001b149.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B149 18064 bytes
SHA-256: 6f7caf5735fb377f3387066babfc43184602cdf82b96d5b87e884ef5805cb4d8

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