Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed4865bd7282c9d1…

MALICIOUS

PDF

45.2 KB Created: 2020-08-13 22:50:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8729d83a06faf8bb733451fe3f8fb5fe SHA-1: ebdb0732942f7e43f7552510940b66483f8a6b6b SHA-256: ed4865bd7282c9d1a8e8031f174bc02341c1182eed567b57ba4d5b6ca4ab44e8
194 Risk Score

Malware Insights

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

The PDF contains a link farm and a direct link to a redirector URL, disguised with keywords relevant to a search query. The primary heuristic indicates the PDF links to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the redirector URL and keywords suggesting a lure. No scripts were extracted, limiting the analysis of direct execution capabilities.

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.ru/pify?keyword=3d+animation+maker+app+android In PDF document text
    • http://lupodenop.berksonrealty.com/uploads/1/3/2/7/132740214/1944928.pdfIn PDF document text
    • http://getux.ridequinesask.com/uploads/1/3/0/9/130969204/73044847aee7a97.pdfIn PDF document text
    • http://files.mrsburtons.co.uk/uploads/1/3/2/6/132681757/vufub-revejavamiwe-gatejusalowa-patiditogozupi.pdfIn PDF document text
    • http://pibepera.bluestonebabe.com/uploads/1/3/1/0/131070611/4335277.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/1/0434/2031/9893/files/chipotle_fax_order_form.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1732/3175/files/fujegomuzuga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9094/3902/files/11_science_biology_book_in_gujarati.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3751/6191/files/sociology_notes_class_12.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9943/7721/files/james_stewart_calculus_solutions_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9373/7110/files/67077501802.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9079/5941/files/fumawedisegulabunid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6224/7067/files/13313701058.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0182/2875/files/72944308438.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1849/2824/files/mununuzowolagebap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/38746106010.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_off0000736f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x736F 5028 bytes
SHA-256: cac40a82e8ef770a17ec9ed0b5fb85ba1f97be179f0ffbaf1077a8bed36cc8d2
font_01_sfnt_off0000846b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x846B 10292 bytes
SHA-256: 752d6d69416f567555dd30ff01087c95a71bf2def188e76c97a7b1d00b1e8411

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