Malicious PDF — malware analysis report

Static analysis result for SHA-256 52e75eff17ae7af2…

MALICIOUS

PDF

52.1 KB Created: 2020-08-08 19:53:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 407d10ab5bd41a12b859d8af8c8b2594 SHA-1: 40d5fae91a34ff9c10dc5aa954739769a41bc392 SHA-256: 52e75eff17ae7af25414ba7c331928a9eec9013965eb893e14da322b71661fd7
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains numerous embedded links, with a critical heuristic identifying a link to a known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=hernia+discal+lumbar+tratamiento+pdf', which is likely intended to lead the user to malicious content. Another heuristic indicates a link farm, with 'https://cdn.shopify.com/s/files/1/0434/5665/9621/files/zelabufudavino.pdf' being the first listed.

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.cc/pify?keyword=hernia+discal+lumbar+tratamiento+pdf In PDF document text
    • http://files.raincrossinfoservices.com/uploads/1/3/2/6/132695560/bejuxisafodajak.pdfIn PDF document text
    • http://files.right-resources.org.uk/uploads/1/3/1/8/131857679/5956744.pdfIn PDF document text
    • http://files.elamalawi.org/uploads/1/3/1/4/131406086/zupilo-xokasubavotap-jarepoweta-momoresudat.pdfIn PDF document text
    • http://files.gsi-ed.com/uploads/1/3/0/8/130813521/kobimineduta_kupix.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/1/0434/5665/9621/files/zelabufudavino.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3592/6434/files/21290821372.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4628/1121/files/fetudirerewixinin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5850/3573/files/dizutolezuniwakez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2469/4939/files/4612803705.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2875/0241/files/52590835885.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3724/5086/files/12816351587.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5248/2208/files/87696930935.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0501/6226/files/cars_and_drives_mod_1._7._10.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2985/5393/files/public_private_partnership_projects.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8783/7849/files/ettercap_kali_linux_tutorial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7361/0663/files/pogiwomukijeninamefogi.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_off00008e8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E8B 5404 bytes
SHA-256: 7e98d9219f23314bffd3726967c18fe1debd3962fa2cd8789ff52fb6c989941e
font_01_sfnt_off0000a0d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA0D0 10460 bytes
SHA-256: 24258f4deb96d66e972e1444983eb2105ad65ffcb3d97cf32c23b0ce73756c23

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