Malicious PDF — malware analysis report

Static analysis result for SHA-256 525a30458c97dbef…

MALICIOUS

PDF

41.1 KB Created: 2020-08-16 00:44:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bb392c4593e603e083f92b8482c2f7ac SHA-1: e2aaf87ed9b6c07114b6458a0869186ca77059f7 SHA-256: 525a30458c97dbef0437ccfbea3ee915a0b09ac7b13dfb0edd29deb846f8e97f
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains multiple heuristics indicating malicious redirection and a link farm. The document body, though heavily obfuscated, contains a URL that points to a known malicious redirector. This redirector is likely used to funnel victims to malicious sites for phishing or malware downloads. The presence of numerous external PDF links, many hosted on Shopify, suggests an attempt to manipulate search engine results or distribute content widely.

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.cc/pify?keyword=video+facebook+via+pc In PDF document text
    • http://files.niassestudios.com/uploads/1/3/0/8/130874318/b919e96e4ba.pdfIn PDF document text
    • http://witur.spokanepagans.com/uploads/1/3/1/3/131397989/xokokejelak.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/1/0458/6120/8217/files/vonawupugatesesitenamo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6180/4197/files/21878433103.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9390/8892/files/tekkit_legends_sphax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3530/3831/files/38650228299.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0293/6992/files/how_to_make_polyaniline_subnautica.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0870/5187/files/gasixawos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1574/8253/files/28456916616.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8012/2532/files/interview_questions_for_manager_position.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2567/0037/files/33251080063.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8772/2648/files/pokemon_go_ipa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4295/5676/files/14255120636.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 8

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_off000063ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63EE 5072 bytes
SHA-256: 5170679ac327e554e2df967bbf49f8ac2a802b53964584fdc3a6aa106f06b506
font_01_sfnt_off0000754f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x754F 10060 bytes
SHA-256: eb7861ce9f42f68d9c24ea05714d79cd195586c8d2ca54bf5a90b58750a24545

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