Malicious PDF — malware analysis report

Static analysis result for SHA-256 481175b021d92268…

MALICIOUS

PDF

34.5 KB Created: 2020-08-10 21:36:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 7bbfd420b159e76196e5ac552d267eb7 SHA-1: f010e2f8427bba5839d8960b062823d6753cd998 SHA-256: 481175b021d9226838350a733dea649bb03ee159594948db3d0c6b2d713c5a73
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a mass external link farm, with many links pointing to other PDFs hosted on Shopify. One prominent link, 'https://ttraff.ru/pify?keyword=aprendizaje+cooperativo+en+las+aulas+juan+carlos+torrego+pdf', redirects to malicious infrastructure. This suggests the document is designed to lure users into clicking malicious links, likely as part of a phishing or redirection scheme.

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=aprendizaje+cooperativo+en+las+aulas+juan+carlos+torrego+pdf In PDF document text
    • http://files.valenty.com/uploads/1/3/1/4/131453060/80faa4ad2c7f.pdfIn PDF document text
    • http://files.thedancehallacademy.com/uploads/1/3/2/3/132303189/fugigu-lisavaxudujutoj-wasidepebid.pdfIn PDF document text
    • http://zomexebu.ridgeviewonline.com/uploads/1/3/2/6/132682646/gajiti.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/1/0437/5301/3409/files/wenujib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9592/4640/files/demeselolizomanenozub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8249/7701/files/82199115642.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1024/4260/files/kikotagoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1424/9886/files/gegowamo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6881/7562/files/dinexizur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rejumaxerufu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3437/0470/files/mawar_hitam_candra_malik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6174/7605/files/ravavadejut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7151/8373/files/lasaxijudatevul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0098/7801/files/rigimamutovarubek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0444/1980/9447/files/all_information_about_badminton.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 2

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_off000046b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x46B7 5500 bytes
SHA-256: 420ac3651903dbdaab0498cc35b364dd4a6f27944b04e58b48826d1cbbe014ed
font_01_sfnt_off00005982.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5982 10220 bytes
SHA-256: fd163d0e9723f779c446456c5f77b9b250db4d39d7d7e035853ed9f89c6495f1

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