Malicious PDF — malware analysis report

Static analysis result for SHA-256 4df64d09eda93a4c…

MALICIOUS

PDF

34.5 KB Created: 2020-08-11 12:52:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 65e247d5ffe1b87a4cb0626addafd7ac SHA-1: 96480a39d9b0619064833eeb19ec7422b7fb1951 SHA-256: 4df64d09eda93a4c492513c20c8b3277ddce275fa3e19f9cb19a6c7d9098e9c8
194 Risk Score

Malware Insights

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

The PDF file was identified as a malicious redirector and link farm. It contains numerous embedded URLs, with one pointing to a known malicious redirector infrastructure. The document body, though heavily obfuscated, also contains the URL https://ttraff.ru/pify?keyword=startup+enxuta+eric+ries+pdf, suggesting a lure to a malicious site. The presence of many external links indicates a likely attempt to distribute further malicious content or conduct 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.ru/pify?keyword=startup+enxuta+eric+ries+pdf In PDF document text
    • http://files.prestonsociety.co.uk/uploads/1/3/0/7/130775795/973bcb.pdfIn PDF document text
    • http://files.heartofasiatravels.com/uploads/1/3/0/8/130813111/2174998.pdfIn PDF document text
    • http://files.bespokenpodcasting.com/uploads/1/3/1/3/131397964/pasewagaxid.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/1/0433/0071/6694/files/tofilupigirurikevizaxanim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0373/9294/files/pigowafi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2236/0469/files/12_bar_blues_examples.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3314/8062/files/matteo_carcassi_pdf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5477/5970/files/deduwiruvakaxo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8289/0912/files/vojagavuz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1312/8867/files/zepade.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8503/6708/files/8456290159.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/9919/9390/files/jolomubipifiraju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0422/1849/files/uniden_scanner_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0925/2250/files/greek_mythology_gods.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7107/7526/files/jirilulowudafa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0161/8330/files/solaire_minecraft_skin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1024/3229/files/36052107046.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_off000049ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x49AE 5288 bytes
SHA-256: b67613002e4f143bef4f6c07acac628d1ff0800fa666e54244c5b876729b4275
font_01_sfnt_off00005bb3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BB3 9752 bytes
SHA-256: b48ba1515dbac5b5ace9789698a761faf1f871d12ac2e6c30834979f74d0b6b1

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