Malicious PDF — malware analysis report

Static analysis result for SHA-256 c38bb410d12958b7…

MALICIOUS

PDF

43.9 KB Created: 2020-08-10 19:40:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 800eed082f1adb252eb016804f0b9a86 SHA-1: 7271d2e0e2bad3d5492364a1a548950b24243fa0 SHA-256: c38bb410d12958b70cc96f233225fab3fba3d5462366e27701b42bb8d4a5a86b
194 Risk Score

Malware Insights

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

The PDF document contains a mass of external links, many of which point to a redirector service. The primary malicious link, 'https://ttraff.cc/pify?keyword=gastric+bypass+diet+plan.+pdf', is designed to lure users into clicking by disguising itself as a diet plan. The document body, though heavily obfuscated, contains this URL and other PDF links, indicating a phishing or redirection attempt. No scripts were extracted, but the PDF structure and link farm heuristics strongly suggest a malicious redirection strategy.

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=gastric+bypass+diet+plan.+pdf In PDF document text
    • http://gurexarin.echoltdqc.com/uploads/1/3/2/6/132681670/b3620b2.pdfIn PDF document text
    • http://files.nunes-ueno.com/uploads/1/3/2/6/132696598/24d9141339e26e4.pdfIn PDF document text
    • http://files.newsingaporecondos.com/uploads/1/3/0/7/130775897/5473874.pdfIn PDF document text
    • http://files.rounduprealtyandbrokerage.com/uploads/1/3/2/7/132710628/wanugabu-vubonu-kakolapagora.pdfIn PDF document text
    • http://files.guntweaks.com/uploads/1/3/1/3/131381363/nafimej_demekomutifesez.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/1/0428/9835/8432/files/27360052690.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6305/0394/files/runowadodajuxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5370/1525/files/yahoo_messenger_free_download_for_android_phones.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4681/3344/files/types_of_linked_list_in_c.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7180/7381/files/sample_mp4_video_url.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0599/3375/files/kiwedakipudotujiwitubajet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4899/2919/files/lekiziruzimekoxab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8602/8708/files/fitabet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1863/9765/files/vowoken.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6836/6760/files/laxexowuwekejurawu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9216/3227/files/9910637055.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4208/5783/files/49167078113.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 8

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_off00006be8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BE8 5452 bytes
SHA-256: ac02d460bdf02e087bff41191538ff42c4e356cf7c764e98a9b42c9410def534
font_01_sfnt_off00007e8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E8E 10580 bytes
SHA-256: 6c19a99e5174a80e97c92a6994fdcdf0e687faf8551f9b18e130586ccffae401

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