Malicious PDF — malware analysis report

Static analysis result for SHA-256 5290cdd9942e3d79…

MALICIOUS

PDF

43.9 KB Created: 2020-08-17 03:59:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8361979d4cfe8568258096762fd881dd SHA-1: 679876b53c2f3e41861fe57d72a3d83f79ab011e SHA-256: 5290cdd9942e3d796bfded4dc235d2eeefd3d93c8cc4b6922ac2e9daf87ea75a
194 Risk Score

Malware Insights

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

The PDF contains heuristics indicating it's a malicious redirector and part of a link farm, specifically designed as an advance-fee scam lure. The document body contains text related to 'chhota bheem cartoon games' and a URL pointing to a redirector, which is likely intended to lead the user to a malicious site. The presence of numerous external PDF links further supports the link farm heuristic.

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=chhota+bheem+cartoon+games In PDF document text
    • http://files.warnersofcoffeyville.com/uploads/1/3/0/7/130775953/zixis.pdfIn PDF document text
    • http://fefovow.matthewthomann.com/uploads/1/3/0/7/130776046/887a94ff.pdfIn PDF document text
    • http://files.whattodoincatalonia.com/uploads/1/3/1/8/131871424/3de36c10a.pdfIn PDF document text
    • http://files.greyelephantarch.com/uploads/1/3/0/7/130776629/2686e1d1.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/1/0431/5653/7493/files/ximexabaxafana.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7256/8996/files/nusodenufire.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8669/0969/files/business_law_south_africa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0531/2156/files/keladaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2492/5347/files/rewavixobobogijofo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3706/5370/files/35332474030.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2920/8983/files/tinoxima.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3631/0693/files/no_ceilings_lil_wayne.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4211/1641/files/30753532346.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0321/3984/files/55707260967.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8858/4605/files/59750586492.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7386/2821/files/bartaman_patrika_today_all_pages_in_bengali_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1278/4277/files/45658956445.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 2

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_off000069ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69AE 5224 bytes
SHA-256: 5c75c4e92a0fc19ff1543f76dfd89695a0d85e7a469e2592ded8108df33b9576
font_01_sfnt_off00007b51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B51 12364 bytes
SHA-256: b8076542ded603a0348e986a041ae9a028e48b21d746cf8b3ce8eab1d26af567

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