Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f3c8d873a11041f…

MALICIOUS

PDF

40.9 KB Created: 2020-08-22 19:40:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9f7b8e6cff72f3c5211b7663f45dfe47 SHA-1: 801b50c7a37205422a799e953d14674b0bc89f0c SHA-256: 9f3c8d873a11041fd5a419390ecbaae11e58be7d518e66c4fafa6b217e57b3f8
194 Risk Score

Malware Insights

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

The PDF contains a link farm and a redirector pointing to a lure for 'Mount Blade II Bannerlord Beta', suggesting a phishing or malware distribution attempt. The embedded URLs are likely part of a SEO spam campaign to drive traffic to malicious content. The ML classifier strongly indicated maliciousness.

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=mount+blade+ii+bannerlord+beta In PDF document text
    • http://files.yogawithapurpose.com/uploads/1/3/1/6/131606798/genarinipo.pdfIn PDF document text
    • http://files.bronzebeautylounge.com/uploads/1/3/1/1/131163957/sidusofife.pdfIn PDF document text
    • http://lepija.heyshamfm.church/uploads/1/3/1/4/131437508/fokejomuf.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/1/0429/8866/7034/files/wimixetit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7976/1061/files/457162215.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1767/4656/files/rpm_list_installed_package.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8993/6025/files/19114478778.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4571/5109/files/dinezoler.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0436/1884/files/mixetokerezifobepedivux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5623/3638/files/36496958669.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3795/7023/files/barn_door_installation_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0481/9613/files/cause_and_effect_of_earthquake.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3443/4969/files/fake_adoption_papers.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 3

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_off00006149.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6149 4784 bytes
SHA-256: 7abca2b7bcbbfdf9c047a00d4c1416ee4305cb56b1aa514f58936229f9826c0d
font_01_sfnt_off000071a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71A3 10936 bytes
SHA-256: b027e0cb02a317d7cca6014aae18566f65f5dc616923a80a8d289aa76d676ef3

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