Malicious PDF — malware analysis report

Static analysis result for SHA-256 33ad6b26b695f332…

MALICIOUS

PDF

43.3 KB Created: 2020-07-29 08:22:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5a94b8ef620d8256cb797df9d10f8dcd SHA-1: 7010c1511b017f84a491b8d79b96ed9f35b60411 SHA-256: 33ad6b26b695f3329b0168782de6a02510f981cbfe4d868212333050a901f0df
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, identified as a link farm, designed to redirect users to malicious sites. The document body and metadata suggest a lure related to a 'yearly event calendar template 2019'. The primary malicious URL identified is a redirector, likely leading to further malicious content.

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=yearly+event+calendar+template+2019 In PDF document text
    • http://files.kathleenmercury.com/uploads/1/3/1/4/131406036/tijurut.pdfIn PDF document text
    • http://files.joanadler.com/uploads/1/3/1/1/131163601/dutelaroboluf.pdfIn PDF document text
    • http://files.clarkstonareafarmersmarket.com/uploads/1/3/0/8/130814874/pubadebixuvutugim.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/1/0430/6052/7265/files/gubodo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6820/3942/files/75465384885.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3964/5093/files/28956984904.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7827/0619/files/22643627699.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4143/8366/files/95179047880.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0589/5075/files/waxezidulev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4489/6925/files/48105527354.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0898/1153/files/75217334108.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3427/2159/files/87837604671.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1290/7423/files/pulomi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0495/2735/files/nagef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2235/8427/files/36720991658.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7689/5388/files/rijebo.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006dc0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DC0 5276 bytes
SHA-256: 5ab51acbd4b3da236a862c297841fa342b697a033127f676f50bd3e54a5892cd
font_01_sfnt_off00007fa4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FA4 9540 bytes
SHA-256: 3a566fbb302ec342cf69f4748ea85c4d11dab1e4e7356ed3bd8fbad17d322176

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