Malicious PDF — malware analysis report

Static analysis result for SHA-256 561f515b766cda0e…

MALICIOUS

PDF

38.3 KB Created: 2020-08-24 07:40:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d273d796a505c586add59e56b0233785 SHA-1: 95d5813f49cd075ee0604456680fba36c6c3c362 SHA-256: 561f515b766cda0e140024b98c22a196bfb5bd5e6671d8834f4d794a0e9fc359
194 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to malicious infrastructure, specifically a link farm designed for SEO manipulation. The document body, though heavily obfuscated, contains the malicious URL and references to a celebrity, likely serving as a lure. The ML classifier strongly indicates maliciousness, and the heuristics confirm the use of redirector links for phishing.

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=aracely+arambula+la+patrona+soy+yo In PDF document text
    • http://files.corealis-ing.net/uploads/1/3/1/4/131408142/6e95b1a.pdfIn PDF document text
    • http://files.kristianpartington.com/uploads/1/3/0/7/130739155/puzukafivitixelegeg.pdfIn PDF document text
    • http://files.jardingallery.com/uploads/1/3/0/9/130969471/bedogif.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/1/0433/0687/7080/files/63491738983.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2605/4306/files/rugupabusikiwejige.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6231/2611/files/les_orientations_du_def_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4411/8428/files/6763127253.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0466/2974/8901/files/jiofi_firmware_update_file_2018.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3113/2322/files/cpp_office_365.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2652/0986/files/anterior_pituitary_hormones.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7794/3967/files/duvidibudivuna.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8239/0435/files/capitalism_and_schizophrenia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5225/2829/files/lutonaborunajifidegolufu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4012/6629/files/fofiwo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7919/7081/files/botogax.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 4

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_off00005790.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5790 5308 bytes
SHA-256: 7f3b8d5c68dd2ae46fd620f92a7b593af2a41fd04ce177c009f9b68a34beb50c
font_01_sfnt_off00006980.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6980 10172 bytes
SHA-256: c5ed1616fa239073c43cecff6d5bc225d133c8233b57aa4cd3e3fb229ddc6cea

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