Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0aef7d71524f1b8…

MALICIOUS

PDF

45.4 KB Created: 2020-08-12 01:38:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ec6f9cf4f745c96be9d64011e4198a47 SHA-1: 9159500dac4c8fbc641be36dc5d59300ce2c6d73 SHA-256: e0aef7d71524f1b8db6e05c3ad80da1ea261cdf29552029f97f7e7ed3d37cf79
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, characteristic of a link farm. One of these links, 'https://ttraff.ru/pify?keyword=feedback+amplifiers+notes+pdf', is identified as a malicious redirector. The ML classifier also strongly flagged this PDF as malicious. The document body, though heavily obfuscated, contains the malicious URL, reinforcing the attack pattern.

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=feedback+amplifiers+notes+pdf In PDF document text
    • http://nanesa.drlindaford.com.au/uploads/1/3/0/8/130874493/8965338.pdfIn PDF document text
    • http://files.tenwebtv.com/uploads/1/3/1/0/131069899/6ec828f1ca7121.pdfIn PDF document text
    • http://files.aldercraft.com/uploads/1/3/0/7/130740033/vomeb_tulavuxu_xituvenelexufoz.pdfIn PDF document text
    • http://files.veagym.com/uploads/1/3/1/6/131606874/3857825.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/1/0428/5543/2348/files/kovowofajotebuvefaxerola.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8317/7885/files/40757684404.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5249/1159/files/wiragedufevelubulit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0642/6275/files/58640739945.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8371/9071/files/89854042549.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8419/3697/files/3370210723.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1877/2903/files/cambridge_igcse_biology_notes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/18396470220.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2684/9700/files/bidikajawilefovure.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4016/1435/files/14476711468.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9495/0556/files/nopexezotinajegedegavu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0056/0803/files/63566374212.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7665/7051/files/gosujililezibivobeduzux.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_off000072ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72EF 5460 bytes
SHA-256: d47e11963f42ca5965bed1706feb96e95ba8825e49557ef188bae59266e68d25
font_01_sfnt_off0000856a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x856A 10332 bytes
SHA-256: e8ab0732f0cf98a6c2cc08ae29d39646beaa833a42f0fcf0a7e4a493ad06bd8f

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