Malicious PDF — malware analysis report

Static analysis result for SHA-256 7bca6eab53952e1e…

MALICIOUS

PDF

44.9 KB Created: 2020-08-24 19:55:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 36c9529571b4bbf7f181719a3fa85203 SHA-1: c0c57faf9359c924b24e26ce5ac0abd4a7a69a50 SHA-256: 7bca6eab53952e1ef1e55ac440d85e4e5bacef2050b78a3ca3ca9083441cf91f
194 Risk Score

Malware Insights

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

This PDF file contains multiple heuristics indicating malicious redirection and SEO link farming. The embedded document body text, though heavily obfuscated, contains a URL that is also flagged as a malicious redirector. This suggests the document's primary purpose is to redirect users to malicious sites, 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=calendar+template+microsoft+excel+2010 In PDF document text
    • http://files.theapostoliccommunion.org/uploads/1/3/1/3/131379296/3864083.pdfIn PDF document text
    • http://tegus.soldwithjoe.com/uploads/1/3/0/8/130813528/favomajefuniwopi.pdfIn PDF document text
    • http://files.curbysickmonedu.com/uploads/1/3/1/4/131438056/bidevenolal.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/1/0433/0687/7080/files/73930450062.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1560/2337/files/krishna_bhagwan_photo_image.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1480/7974/files/apache_poi_convert_to.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6865/2697/files/geometric_sequence_word_problems.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4455/9258/files/viduwapejubujawerofapiwef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3686/8762/files/autotune_free_ableton.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9972/4702/files/isometric_drawing_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6000/2967/files/x32-_edit_app_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9903/7595/files/15357527457.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4575/6821/files/guvor.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6094/4286/files/n64_roms_download.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 7

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_off00007100.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7100 5600 bytes
SHA-256: b1d0cba17e21705c75e8e6a8df9ec9eae1d4b52ebd41dfa1cb474736b7e245a5
font_01_sfnt_off000083f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83F9 10236 bytes
SHA-256: 424cb1999afb53812d0cf0f2184dd1f3cae3987fb228bb0dbb19465548603286

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