Malicious PDF — malware analysis report

Static analysis result for SHA-256 7ae5dee248a0c2cc…

MALICIOUS

PDF

40.9 KB Created: 2020-08-23 14:10:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cd99c8606421bfce464a4c6606aa0e7b SHA-1: 64c389d37f47e8b8defc39f33fc3a0e6061b7fb3 SHA-256: 7ae5dee248a0c2cc268011f4c2955a6d52e6bf62adc6c902279530f6e29761a0
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, many of which point to a redirector service. The primary malicious link, https://ttraff.ru/pify?keyword=xerostomia+definicion+pdf, is identified as a malicious redirector. This suggests the document is part of an SEO link farm designed to phish users by presenting itself as a free download. No scripts were extracted, but the structure and embedded links strongly indicate a social engineering attack.

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=xerostomia+definicion+pdf In PDF document text
    • http://wonujemi.womensoutdoorweekends.co.uk/uploads/1/3/1/3/131379678/wusejudizuje.pdfIn PDF document text
    • http://xanopa.samanthabowick.com/uploads/1/3/1/4/131438464/5990896.pdfIn PDF document text
    • http://files.stoneworkswellness.com/uploads/1/3/1/6/131637136/2657587.pdfIn PDF document text
    • http://kodogojek.feliceabarr.com/uploads/1/3/0/7/130738666/pululit-girif.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/1/0431/5545/6149/files/faguse.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/94448736580.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3505/7559/files/bafeb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0473/8206/files/ramololinal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2531/8563/files/92853466130.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6737/4758/files/tajur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8158/1209/files/28314381484.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3694/2234/files/ing_direct_australia.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6409/8970/files/saxunagemufevodedetavasu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1536/5031/files/dajazezupadex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4423/9510/files/que_es_una_carga_electrica.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8253/0472/files/vonixijizotosaxikisut.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_off00006304.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6304 5248 bytes
SHA-256: 68c156cc5257b66d2c74253b3a7383e3bec37ab5c38afe105d43f0f941dce302
font_01_sfnt_off000074be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74BE 10020 bytes
SHA-256: 2b7421801bf634453d134965452bec24bf78a05268db99ea5350e3b70d03018e

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