Malicious PDF — malware analysis report

Static analysis result for SHA-256 811c850455bda7c1…

MALICIOUS

PDF

37.0 KB Created: 2020-09-12 13:09:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 00ca7757c5f99cd30f26eec54a2c0aff SHA-1: f3f4ae8f9d1485976a62d365978c81effcde5f3a SHA-256: 811c850455bda7c152b51479c51ff99f13340d669fef1b50ec2669ab96e3c80b
194 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many of which point to redirector infrastructure and SEO link farms. The primary lure appears to be a disguised link, 'pagla akhara dj song', leading to a malicious redirector. This suggests an attempt to drive traffic to malicious sites, likely for phishing or malware distribution, leveraging the 'Spearphishing Attachment' and potentially 'Drive-by Compromise' techniques.

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.link/wix?keyword=pagla+akhara+dj+song In PDF document text
    • http://files.equivesthq.com/uploads/1/3/1/4/131406507/50fcc0f19180ab.pdfIn PDF document text
    • http://files.2319thestore.com/uploads/1/3/1/3/131398555/wojod-gizelaben.pdfIn PDF document text
    • http://puxuda.blacktidefishing.com/uploads/1/3/0/9/130969077/favutojeluz_gavagogove.pdfIn PDF document text
    • http://files.mrmacbible.com/uploads/1/3/0/8/130873849/6654396.pdfIn PDF document text
    • http://nodizuf.buy-ritehomes.com/uploads/1/3/0/8/130813604/2235095.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/1/0430/3667/2162/files/iskcon_bhagavad_gita_in_tamil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6572/7384/files/business_plan_sample_product.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6699/7398/files/solving_equations_with_no_solution_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4474/8950/files/milifapuvesogerazetef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6061/6599/files/mugadidikatotukamivegada.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1511/7727/files/bibliotecas_virtuales_en_salud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6269/7894/files/volume_by_cylindrical_shell.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 5

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_off000052c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x52C1 5228 bytes
SHA-256: e85758de8c40d67336b8f736de1b75397bd8fa4aa5e4facfcbc22cbd8ff10ca8
font_01_sfnt_off00006485.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6485 10272 bytes
SHA-256: bc94409784f914274654c0fca8695afbe95a944258995d739f355e32c79f6287

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