Malicious PDF — malware analysis report

Static analysis result for SHA-256 c81f4acb508c71b7…

MALICIOUS

PDF

47.8 KB Created: 2020-08-18 21:40:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 96d5110c5f1ecde0166c81699ae7cdd4 SHA-1: c26b08509dee9dbb054c659d6bef68a2c3544745 SHA-256: c81f4acb508c71b788d5474917870606a02a17cf963b085072c6e2184268b99a
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a mass external link farm, with one prominent link pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the text 'Hd movies hub app' and a URL that aligns with the malicious redirector. This suggests the PDF is designed to trick users into visiting 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.com/pify?keyword=hd+movies+hub+app In PDF document text
    • http://nadanije.coburnsandandgravel.com.au/uploads/1/3/2/7/132740214/lakekozijifitagotev.pdfIn PDF document text
    • http://files.myportlandtherapist.com/uploads/1/3/0/7/130775690/jolupirififazi_mizimitulilofa_dixizelil.pdfIn PDF document text
    • http://nilufurox.rmkvapor.com/uploads/1/3/1/4/131453109/9a6673.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/1/0428/7404/4579/files/fukusisunarome.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6785/8334/files/38921940026.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9105/1164/files/70232385259.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6905/5911/files/14924494986.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0309/1876/files/catalogo_bticino_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8050/6785/files/32605537887.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5458/0391/files/sopinovalexuxizujenanoku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1796/8543/files/38245657183.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9201/7305/files/bloqueo_auriculoventricular_tratamiento.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0763/1779/files/surugezafobixene.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5107/4214/files/gonojanuvuposakuxat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8991/0167/files/glass_mask_manga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4591/0678/files/firikavasa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1974/7999/files/71468907345.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 6

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_off00007ba4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BA4 5232 bytes
SHA-256: bfdfa4f6c2a57de1b818d7f81950631b7fbef0df7a0036ea44c1d91da189310c
font_01_sfnt_off00008d50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D50 10844 bytes
SHA-256: 5d85ce8deca44850455e118c272cf83b63e4762d3b31aeb15edbab5a791f0841

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