Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0aba9cab199bb3f…

MALICIOUS

PDF

43.0 KB Created: 2020-08-25 04:53:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d8f1addf5784948518e8f869efcc6d4c SHA-1: febd7a69e9b6f230bfa0e805a0cb160276d7f078 SHA-256: e0aba9cab199bb3f2265531c10ab9de9a8eb6b668ed1c026dbe952a570ff1c43
194 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, with a critical heuristic firing indicating a link farm pointing to known malicious redirector infrastructure. The primary malicious URL identified is https://ttraff.ru/pify?keyword=couchbase+lite+android+example. While the document body is heavily obfuscated, the presence of numerous links and the ML classifier's high confidence score strongly suggest a malicious intent, likely related to phishing or malware delivery through redirection.

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=couchbase+lite+android+example In PDF document text
    • http://nosoto.remembrancestars.com/uploads/1/3/1/4/131438044/sakeluram_regetetolekuk_wotogope.pdfIn PDF document text
    • http://files.cbweis.com/uploads/1/3/0/7/130740252/dadijerusovilij-kepago.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/1/0431/5293/3018/files/tufawiroxijolunomimewef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4210/3719/files/22180867650.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5730/8063/files/bunolufefibimadi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9063/2101/files/informe_de_movimiento_rectilineo_uniformemente_variado.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2930/7293/files/befanefazugafonop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9954/6010/files/xajabinuzagigoduk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3546/6655/files/dokkan_android_19_team.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2226/1143/files/xewukim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7368/1061/files/53651050401.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8503/6706/files/comparative_balance_sheet_analysis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6825/2565/files/puwobanemaluka.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_off00006633.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6633 5428 bytes
SHA-256: 6919b62d1415aab20f736db39c1832f992f9f8318cde6c3e655ad2054a05f704
font_01_sfnt_off0000786c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x786C 11400 bytes
SHA-256: 95d5a1c3980de7f309163a88123e5108b211592bf2f5e78f6863beaedc8e24ce

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