Malicious PDF — malware analysis report

Static analysis result for SHA-256 65d639725bb9f98e…

MALICIOUS

PDF

44.1 KB Created: 2020-08-19 00:37:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 53457bf660214c4975f77cbe82d39a64 SHA-1: 272478fe882558684f32af33bd36baa9359e54f8 SHA-256: 65d639725bb9f98ed46a6077512cbcb12bef43040b3b1c35e6947616d39d1fad
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a critical heuristic firing for a link to known malicious redirector infrastructure. The document body, though partially corrupted, contains text related to 'Home depot knowledge questionnaire answers' and the malicious URL, suggesting a phishing or scam lure. The presence of numerous links to external PDFs, many hosted on Shopify, indicates a link farm designed to obscure the ultimate destination.

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=home+depot+knowledge+questionnaire+answers In PDF document text
    • http://files.gogginslonestarfarms.com/uploads/1/3/0/7/130775032/9652219.pdfIn PDF document text
    • http://files.ridgemonthomeowners.com/uploads/1/3/0/8/130873893/bezobovawoza.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/1/0434/1438/8888/files/goin_south_movie.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8015/4269/files/pdf_to_jpg_converter_software_free_download_with_key.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6823/5682/files/31614877424.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8840/2839/files/tratamiento_del_cancer_de_pancreas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1229/2767/files/benjamin_button_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0714/8185/files/77788767840.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7507/5225/files/anglo_saxon_period_in_urdu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3368/8226/files/mihail_bulgakov_majstor_i_margarita.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8781/4044/files/19117746927.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vinupagudesezubinu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8692/1376/files/lowes_wise_va.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4114/4483/files/salemi.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_off00006ba4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BA4 5520 bytes
SHA-256: 12002da87fb02df7449e2173a013b9c7f4b21b32e869fd83878e098bf1ed9e53
font_01_sfnt_off00007e5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E5F 10928 bytes
SHA-256: 80fe1c2af72cf30183366cccebbe2c78255852287ea5fd30bfd124797892c134

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