Malicious PDF — malware analysis report

Static analysis result for SHA-256 7c5a53eb4c07eddb…

MALICIOUS

PDF

42.6 KB Created: 2020-08-07 06:41:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4220f30c9b4a4ed85a3b0aa76d1bb2a0 SHA-1: 8fc3350645c9191d74e16061889106e735448183 SHA-256: 7c5a53eb4c07eddbc4d2907b3211d53443683dcf47246c51323e03425ca04c10
194 Risk Score

Malware Insights

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

The PDF contains numerous links to external resources, masquerading as free downloads, which ultimately redirect to a malicious domain. The primary redirector URL is https://ttraff.ru/wb?keyword=tipos%20de%20variables%20en%20estadistica%20ejemplos%20pdf. This technique is commonly used for phishing or distributing further malware. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

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/wb?keyword=tipos%20de%20variables%20en%20estadistica%20ejemplos%20pdf In PDF document text
    • http://files.tiffanyphillipsrn.com/uploads/1/3/0/9/130969461/1263713.pdfIn PDF document text
    • http://boxoxowur.alchemyperfume.com/uploads/1/3/1/0/131069839/mejovede.pdfIn PDF document text
    • http://files.howtobookaholiday.com/uploads/1/3/1/4/131408854/zapazonuxew-sadatidubufax-fabotadogomexo.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/1/0439/3461/3659/files/bruno_latour_libros.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3081/4626/files/decision_support_and_business_intelligence_systems_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3730/1653/files/88426315493.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4139/7656/files/88451178301.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0032/3478/files/sd_media_luncher.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0273/9362/files/18969340997.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7455/9893/files/kamixel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4606/7621/files/45210023455.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mobisibat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3462/3643/files/local_gauge_invariance.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7162/5634/files/63130786174.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5618/4996/files/80553614882.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2971/6374/files/78899882615.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 5

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_off000063f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63F7 5528 bytes
SHA-256: 4aec0497426eb5aba6747b3e1a6100e278a0bf029945a5d0cab44594320450b4
font_01_sfnt_off000076b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76B3 11364 bytes
SHA-256: 5d349a28529f40bde2dfd08f765bf5c6884f8450b53b7a6591cd2d890115264b

Open this report in the interactive analyzer, or submit your own file for analysis.