Malicious PDF — malware analysis report

Static analysis result for SHA-256 15cb9efb9a443a82…

MALICIOUS

PDF

52.6 KB Created: 2020-08-08 09:47:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 86e035a69a41c8a2994ed5bb6b29a1a2 SHA-1: 5588889fec51ac39cc1d6b04c5dad3a6e62a5294 SHA-256: 15cb9efb9a443a829602bbbd2b3af94e42383841fc66faeca9701bf744dd8ebb
194 Risk Score

Malware Insights

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

The PDF contains numerous links to external resources, many of which point to a redirector service known for malicious activity. The document body, though heavily obfuscated, contains the text "Venn diagram caselet di pdf" and a URL that matches the malicious redirector. This suggests the document is designed to trick users into clicking the link, which then likely leads to a phishing page or malware download.

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=venn+diagram+caselet+di+pdf In PDF document text
    • http://fegerenoz.sophiehirsh.com/uploads/1/3/0/8/130813528/8456210.pdfIn PDF document text
    • http://files.norcrosstrack.com/uploads/1/3/2/7/132710704/3242583.pdfIn PDF document text
    • http://files.reseeworks.com/uploads/1/3/0/7/130739891/banirowirexuzolis.pdfIn PDF document text
    • http://files.ambassadorsofnature.com/uploads/1/3/2/3/132302718/5731939.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6542/6598/files/vivaldi_winter_piano.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7674/7413/files/teori_agenda_setting_adalah.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1451/9966/files/5059194238.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9749/6488/files/abc_chemistry_book_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9557/2126/files/64623418282.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7960/5147/files/farmakokinetik_antasida.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9468/8419/files/management_organizational_behaviour_mullins.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8875/6374/files/bogimidop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0857/3091/files/house_allotment_letter_format.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6305/0394/files/lawawotugag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5247/4280/files/7905045798.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007edc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EDC 5440 bytes
SHA-256: cb0ab84af283c4c1880b6a2419ede7a0c78bf876dee3d2606b2484af2c39f072
font_01_sfnt_off00009151.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9151 10892 bytes
SHA-256: 362d1d70c8053ca760446a63d4db405207ea894620695efb263923eb792842e5
font_02_sfnt_off0000b68f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB68F 3804 bytes
SHA-256: 5205d74226710131c9b9d2333742b120c2975ad0231432a3efcf11e4ba68c1ea

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