Malicious PDF — malware analysis report

Static analysis result for SHA-256 719e5682c39ff63e…

MALICIOUS

PDF

42.1 KB Created: 2020-08-07 23:46:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3319194fe1901b29b1f2998249d478ab SHA-1: 2c091600bd481440b5be0074bc382b61e717ad41 SHA-256: 719e5682c39ff63eb78719a4e7bcf6162f114ae61cf0e3b78a81b6604d71ff48
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, many of which point to a redirector service known for malicious activity. The primary redirector URL is 'https://ttraff.ru/wb?keyword=la%20pedagogia%20del%20oprimido%20pdf%20libro', which is also present in the document body. This indicates a phishing or scam attempt leveraging SEO tactics to distribute malicious content. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

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.ru/wb?keyword=la%20pedagogia%20del%20oprimido%20pdf%20libro In PDF document text
    • http://files.lirielbijoux.com/uploads/1/3/1/4/131438056/73972c6bee0434.pdfIn PDF document text
    • http://files.masiuliai.com/uploads/1/3/0/8/130813756/burom.pdfIn PDF document text
    • http://xutuvif.sherileegray.com/uploads/1/3/1/8/131871478/gojagosixaro-wowur-zevumenifu-nutepet.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/1/0435/2131/0875/files/nesitovomo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1018/5621/files/neural_networks_and_back_propagation_algorithm.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/ninitegabi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4888/4634/files/39746031542.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2711/1841/files/gta_san_andreas_cheats_ps3.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1339/7924/files/bekizepijogivobumo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9505/5777/files/jodopewukozoxa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5581/6608/files/nesopapozugowefarafof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0041/2835/files/advanced_java_multiple_choice_questions_and_answers_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/72710717911.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6823/5682/files/dasupadovo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1175/8504/files/brodong_tua_mp3.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 6

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_off0000645d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x645D 5264 bytes
SHA-256: f8b9cc11dcd0e3dcf1716abce3400948bbb204d3e28105f1a273d969ce90a4d6
font_01_sfnt_off00007632.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7632 10840 bytes
SHA-256: 5767c448ab940f510dec1f299cc86134511b3685af8ad2f6e4af3b23b92c168b

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