Malicious PDF — malware analysis report

Static analysis result for SHA-256 9eeb165ee5d6cd41…

MALICIOUS

PDF

43.5 KB Created: 2020-08-16 18:46:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3e10a0accf047813ba27743f5f619411 SHA-1: 53980861e9e0386159fb023cb9cd2e5f2ba24a61 SHA-256: 9eeb165ee5d6cd41c7a34edc3ae8d30bacfacffd7801a78cb76e9a29b886ce4c
194 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, with a critical heuristic firing indicating a link farm and a redirector. The primary URL points to a redirector service, which is a common technique for SEO poisoning or to mask malicious destinations. While no scripts were extracted, the sheer volume of links and the use of a redirector suggest a malicious intent to lure users to potentially harmful content.

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=basic+information+about+upsc In PDF document text
    • http://files.companythreesixty.com/uploads/1/3/0/7/130776786/tumagolumapoziz-nidenibomuzev-susukidiwotaz-jiguxo.pdfIn PDF document text
    • http://wagepi.inneractiondance.com/uploads/1/3/1/8/131857631/e1151f947e644.pdfIn PDF document text
    • http://jerisiso.courageousgirls.com/uploads/1/3/0/9/130969577/nuwozopule.pdfIn PDF document text
    • http://files.countrysidechurchseminole.com/uploads/1/3/2/7/132710491/3642e9.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/1/0434/5472/6310/files/29774361664.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5370/9472/files/opposite_adjectives_vocabulary_exercises.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6237/8152/files/wezefarudozipipafu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7076/6750/files/cbse_compartment_exam_online_form_2019.pdfIn PDF document text
    • http://wuxezef.stokes-farm-inc.square.site/uploads/1/3/1/3/131398547/c2dfcfae908b452.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5780/6486/files/20646776661.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6097/7048/files/9283777286.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3595/9202/files/defobikawafewi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/30617095305.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8974/0441/files/jituweboripepolif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3762/9348/files/54789719824.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9541/7237/files/36014418236.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006ac9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AC9 5320 bytes
SHA-256: e1c208c162d9b70d8ca03896dba547b22f5194f9971e5fc472674409aa07d754
font_01_sfnt_off00007cb8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CB8 10548 bytes
SHA-256: f8a05f74f74c3dc136e8f344eaba18c1d9a98168954a76baeb99f849d9396080