Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d56a05891d56cf2…

MALICIOUS

PDF

35.4 KB Created: 2020-08-18 15:40:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cffa6188a53aa947dc39902201be0c8b SHA-1: dc8be417f2e9b9ea276cb19c4c198cfc3313de7d SHA-256: 1d56a05891d56cf2e814fb39024175db56c40893d1536a774a4f5b304dc077ab
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to a redirector service that ultimately leads to malicious infrastructure. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=3+roller+pipe+bending+machine+pdf', which is identified as a malicious redirector. This suggests the document is designed to trick users into visiting a malicious website, likely for phishing or malware distribution.

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=3+roller+pipe+bending+machine+pdf In PDF document text
    • http://files.puterbaughcollection.com/uploads/1/3/0/8/130813694/balepevaza.pdfIn PDF document text
    • http://files.doicontrol.com/uploads/1/3/0/7/130776388/3188830.pdfIn PDF document text
    • http://files.worldofmusicpc.com/uploads/1/3/1/6/131636914/05685ed529.pdfIn PDF document text
    • http://files.artforyoubyq1.com/uploads/1/3/1/4/131437982/waviditi_navogujulusip.pdfIn PDF document text
    • http://files.scenichillretreat.com/uploads/1/3/0/9/130970009/1380681.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/1/0440/8072/6168/files/dobesadirolonitotoz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9395/8560/files/seek_the_old_paths.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1263/6322/files/coldwell_banker_logo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9081/9739/files/42705924545.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5464/4894/files/fikugemobilobapuzud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4298/7423/files/just_eat_plc_annual_report_2019.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4831/0683/files/conversion_de_grados_centigrados_a_fahrenheit_y_viceversa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/4966/2117/files/ablixa_drug_information.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3935/0181/files/5556825216.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4556/0219/files/zupafoge.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6450/0122/files/alcoa_fastening_systems_catalog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9071/5548/files/vewigiwojati.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_off00004b7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4B7F 5600 bytes
SHA-256: ac1b24a6e03a578169c8e4403666fb9eb6968cbd13346966c62a8638c80033cb
font_01_sfnt_off00005e4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E4F 10068 bytes
SHA-256: f9f3337b1188af51e56bc8c9c7f09732db3993f97deba6b66188f4f4f17c1a93