Malicious PDF — malware analysis report

Static analysis result for SHA-256 04995cd43fc81962…

MALICIOUS

PDF

47.7 KB Created: 2020-08-10 03:29:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 56a4d04b0b9dc943ae1c1c8821cbfaae SHA-1: 61e0c37f7efc54b7fcaec041b496b93be3a0e3e3 SHA-256: 04995cd43fc819626cdd706e21f9326fe4a60453126d8c109e2ab3d34f9ba983
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with a primary link pointing to a redirector that promises a free PDF download. This is a common lure for phishing or malware distribution. The presence of numerous links, including to benign Shopify URLs, suggests an attempt to manipulate search engine results or create a link farm. No scripts were extracted, but the PDF structure itself facilitates the malicious 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.com/pify?keyword=bayley+scales+of+infant+development+pdf+free In PDF document text
    • http://files.herblowe.com/uploads/1/3/1/8/131871585/vaganomelogi-rofuda-lonaloruda-gugewareletax.pdfIn PDF document text
    • http://tupipa.healthlinc.org/uploads/1/3/1/3/131379578/zexavabe-pibasexuk-mujumodap-wazujuwadusi.pdfIn PDF document text
    • http://kawudaxi.wintechfrance.com/uploads/1/3/1/4/131438464/dijigagero_kenezazebisit_jefezuwujoz.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/1/0432/6467/1909/files/79783369191.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4293/8784/files/xewunikesozow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3770/4867/files/arquitectura_latinoamericana_contemporanea.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5318/5174/files/71057403907.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2076/3804/files/niedermeyer_s_electroencephalography.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4066/7798/files/kaliwofaruzoda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7217/3733/files/vertical_and_adjacent_angles_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3860/4450/files/39736717407.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7294/5304/files/kemojajaxux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7519/8373/files/division_of_polynomials_examples_with_solutions.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5210/3842/files/les_cestodes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1899/3320/files/azure_cloud_adoption_framework.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/67768868558.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 4

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_off00007832.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7832 5512 bytes
SHA-256: 7b954142c2987bf4047f4f6cbea31b7a9a721cc0c8a271bc15a1d27829652fcc
font_01_sfnt_off00008af2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AF2 10932 bytes
SHA-256: 8cf29975e00808063c1ab49bef2fe3bb10fdb4f3ccf3675484cbecee8713c4fd

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