Malicious PDF — malware analysis report

Static analysis result for SHA-256 45910e1303f184ac…

MALICIOUS

PDF

40.6 KB Created: 2020-08-17 05:46:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f1ab3c15b582d3fe1b982dec7755603a SHA-1: fd36db0a4ab05704b4c623ef8794724b69efe275 SHA-256: 45910e1303f184ac869d9d2646377fc0e73c4e76effbe2959d47682c945be144
194 Risk Score

Malware Insights

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

This PDF file contains a large number of embedded links, characteristic of a link farm designed to manipulate search engine rankings or distribute malicious content. One of the primary links, 'https://ttraff.ru/pify?keyword=evaluating+algebraic+expressions+worksheet+grade+7+pdf', points to a known malicious redirector. The ML classifier also strongly indicated maliciousness.

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=evaluating+algebraic+expressions+worksheet+grade+7+pdf In PDF document text
    • http://files.lhsperformingarts.com/uploads/1/3/2/3/132303388/319101.pdfIn PDF document text
    • http://xedupexu.taylorbarrettphotography.com/uploads/1/3/0/8/130814328/a347128fc.pdfIn PDF document text
    • http://files.theblakegroup.net/uploads/1/3/1/8/131857112/e45cf7b56c1301.pdfIn PDF document text
    • http://files.red-bean-coffee.com/uploads/1/3/0/8/130814124/3988868.pdfIn PDF document text
    • http://jafiduw.carbondalemarket.com/uploads/1/3/1/4/131437254/wanig-kebonomepupu-zovoxitep-zepupijawoxef.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/1/0434/5459/5225/files/tarilatosaraxutuno.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7102/6853/files/455204701.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/54686169254.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6200/0806/files/judirudomosizerowitixalew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lapifobojupe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8023/6702/files/hunting_unlimited_2010.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9378/6791/files/elite_dangerous_key_bindings.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3826/0903/files/62644307667.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2359/6711/files/1587359507.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3058/5239/files/33504969900.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4959/1718/files/aesculap_neurosurgery_catalogue.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6500/6494/files/autocorrelation_matlab_code.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7997/5591/files/34388141824.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 8

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_off00005d83.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D83 5880 bytes
SHA-256: 15c96fc31d69fe5af1221c75f018112b17115785b1973e4fa20e18da7686d8d9
font_01_sfnt_off0000719c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x719C 10392 bytes
SHA-256: 37c319d629e40be9db442cf45748d2b18b340d957fa9f88da0ebed81792f1cf9

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