Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed8450cf4a78545e…

MALICIOUS

PDF

45.1 KB Created: 2020-08-10 23:26:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6775e9867ba0fd76e56a54c21d07d6ba SHA-1: ec2253a2b231d8a7502bcc73f7d6c26d27c373ae SHA-256: ed8450cf4a78545e0d0d0181579d48bd256dfef844d5561d8a219d4498f57c55
194 Risk Score

Malware Insights

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

The PDF file was flagged for containing a malicious redirector link and a large number of embedded external links, indicating a link farm. The primary malicious URL identified is https://ttraff.cc/pify?keyword=midas+trend+apresenta%25C3%25A7%25C3%25A3o+pdf, which likely serves as a gateway to further malicious content. The document body contains garbled text but also includes the same malicious URL and several benign-looking URLs hosted on Shopify, suggesting an attempt to disguise malicious activity within a large number of links.

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=midas+trend+apresenta%25C3%25A7%25C3%25A3o+pdf In PDF document text
    • http://files.bitsofbytes.co.uk/uploads/1/3/1/1/131163853/tosuxaz-getofero.pdfIn PDF document text
    • http://files.lillyotasevic.ca/uploads/1/3/2/6/132682966/b5d2935.pdfIn PDF document text
    • http://files.pencillarium.com/uploads/1/3/1/4/131482916/2482098.pdfIn PDF document text
    • http://files.elginartist.com/uploads/1/3/2/8/132814958/wajumufetifi-tiluva-lipogokuwetaw-wivaruluwo.pdfIn PDF document text
    • http://files.sharodickerson.com/uploads/1/3/1/3/131383247/xapawupono.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/1/0434/4869/6993/files/nintendo_ds_emulator_mac.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6972/5080/files/jevovuritewoburorutekor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8110/5575/files/4619316641.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1668/1629/files/numob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6713/6413/files/60683659555.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6006/0567/files/toxifijipe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8564/4454/files/91023137013.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7899/9446/files/lezivolasuti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/3229/0215/files/nekurivilunibufegiponizuv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6084/7004/files/titoju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7508/4193/files/westchester_county_police_exams.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3016/7203/files/edit_text_in_file_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1456/9640/files/wigefuwebarufakufopeluva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8250/5628/files/mizijiruzo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7701/8524/files/49391271967.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006d18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D18 5508 bytes
SHA-256: 006e8ed8d1a46cbfa3d54c48b3d091de30b70ea5743ac5f72c0eb47aef1b5dd4
font_01_sfnt_off00007f52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F52 12608 bytes
SHA-256: 62dc130bbdeb25b7541fbc2f549a88c8257998ef0d35eab11f9c51682654c110