Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ca5523793ad5527…

MALICIOUS

PDF

34.3 KB Created: 2020-08-19 04:16:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 2f817825d010084a224d4ef06f59b846 SHA-1: 9d7e563a3c1dce06efee04c58bcde512ca179304 SHA-256: 1ca5523793ad55270d83f788a953d86a269a4fb2fc92309f0dbd4bbf818f39ba
194 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, with a critical heuristic firing indicating a link farm pointing to a known malicious redirector. The primary malicious URL identified is https://ttraff.cc/pify?keyword=sas+agenda+2020+pdf. This suggests the document is designed to lure users into clicking malicious links, likely leading to further compromise. 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.cc/pify?keyword=sas+agenda+2020+pdf In PDF document text
    • http://wavaxap.asthecrowfliesquiltshop.com/uploads/1/3/0/9/130969724/1418962.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/1/0431/3694/2234/files/through_the_fire_and_flames_tabs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6819/4978/files/31125132925.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/6128/4757/files/bristle_whisker_catfish_recipe_vanilla.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7689/5398/files/smacna_duct_construction_standards.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6004/4710/files/tukaxutubijakibavekoligej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6240/9881/files/3170171565.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5987/9841/files/85781015403.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8108/0738/files/33275390575.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4174/1205/files/cookbook_template_publisher.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3428/0099/files/sogajafelevopidenafi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0443/8907/3062/files/pdf_annotator_mac_os.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4424/1562/files/alex_s_adventures_in_numberland_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9721/1558/files/wekilogujomuledesagu.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 3

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_off00004639.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4639 5460 bytes
SHA-256: 8b095f5e3cca1e5b11dfaeddd25293bd9e21d4ee2d19ae864f4a6c4c37a63835
font_01_sfnt_off000058d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x58D5 10760 bytes
SHA-256: 1c4b6cf9e73fbabedada63259cb7f39fe52cfbb689698d4264534140a2f51950

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