Malicious PDF — malware analysis report

Static analysis result for SHA-256 1dcbd56cf15c6d31…

MALICIOUS

PDF

45.4 KB Created: 2020-10-07 16:55:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-30
MD5: 6558ab5ca448cf8ec5b2505b9bafc5ba SHA-1: dd3860ea2a07940ad3408776c0f26e1fc3bd1adf SHA-256: 1dcbd56cf15c6d312cf9740217a49eff5da10897c0d5c686be668c8b7442e512
194 Risk Score

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.club/pify?keyword=kitchen+confidential+audiobook+reddit In PDF document text
    • http://zuxojulo.miscoehillpto.org/uploads/1/3/2/6/132681268/vetoxixadukaf_xakevilak_zedibizaf.pdfIn PDF document text
    • http://files.suzygrimshaw.net/uploads/1/3/1/6/131608017/8147415.pdfIn PDF document text
    • http://lotijif.antonstorey.com/uploads/1/3/1/4/131453574/veniduri.pdfIn PDF document text
    • https://site-1037854.mozfiles.com/files/1037854/59968214836.pdfIn PDF document text
    • https://site-1040975.mozfiles.com/files/1040975/31044891661.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0484/6033/3206/files/final_truth.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/0834/6270/files/fedexforum_seating_chart_terrace_level.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5419/3047/files/the_good_pub_guide_essex.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/6004/7253/files/sonic_for_hire.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0313/4627/files/pilafafibozivupapamiperaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/4857/8471/files/lawopapozeboxok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3748/2405/files/62493458186.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000064b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64B6 4988 bytes
SHA-256: 6a8177c080d4ee6186c523ab0c737fd9a48eceafcc2ee75d8b7c737f165f3cd8
font_01_sfnt_off0000758f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x758F 10844 bytes
SHA-256: c8ffae9332919feef4692576d10383f4ab37394ffa96fbc6aa6e8d2f0688fdd1
font_02_sfnt_off00009a91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A91 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230