Malicious PDF — malware analysis report

Static analysis result for SHA-256 c73f864682ddc9b9…

MALICIOUS

PDF

41.9 KB Created: 2020-08-11 06:51:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4f3fbbd3746ca29b516811e77b5a2d81 SHA-1: 214b0e6ba52a4f045ab940f8a760d35a53ade5a1 SHA-256: c73f864682ddc9b9884fa015c3035826f822a8886477a0541605a528527fc797
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, many pointing to a redirector service that is flagged as malicious. The document body, though heavily obfuscated, contains a URL that appears to be a lure for a 'base64 image to pdf java' conversion tool. This suggests a phishing or scam attempt, likely leading to further malicious content or malware download.

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=base64+image+to+pdf+java In PDF document text
    • http://gigotoju.komodopioneers.com/uploads/1/3/0/7/130776760/vupaxa.pdfIn PDF document text
    • http://files.owossogaming.com/uploads/1/3/0/7/130776167/f81b4baa5.pdfIn PDF document text
    • http://files.valuefund.ca/uploads/1/3/1/8/131871535/8237561.pdfIn PDF document text
    • http://tuniwobe.ivoryoungequine.com/uploads/1/3/1/6/131607163/kifetilijor.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/1/0430/9480/2581/files/18872078946.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7387/2807/files/24173762836.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2931/5229/files/nosavezi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4151/9776/files/magazine_proposal_sample.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6495/0945/files/venaxufiratuzi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6243/5739/files/28079381559.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0744/2072/files/28970845184.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4936/1314/files/14547356404.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1687/0296/files/pewitafisegiwaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1962/2808/files/supizupojepapepap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0871/1080/files/23034008907.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4638/7362/files/28285922584.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8454/6209/files/96084675099.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/81159011373.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_off00006301.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6301 5660 bytes
SHA-256: c76ec51c698137415b45abe8ea652035f26915448bb8e70e6cc0e62ec8a0aee7
font_01_sfnt_off00007651.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7651 10796 bytes
SHA-256: a5a9670ac4b833c521142f921fad22194cc550172583a1d65897d8574abc4564

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