Malicious PDF — malware analysis report

Static analysis result for SHA-256 1108623a97a795ca…

MALICIOUS

PDF

42.7 KB Created: 2020-08-22 14:59:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d4a25e59d69656a2403d0f9e47fa2162 SHA-1: 66f76c342b7ba97e347271cc5b5c68940020539c SHA-256: 1108623a97a795ca1f1ee3afa704ee8204b0efe943e8d91182e18c76fd253cf5
194 Risk Score

Malware Insights

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

The PDF contains numerous links to external resources, many of which point to a redirector infrastructure associated with malicious activity. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of these links, suggesting an attempt to manipulate search engine results or distribute malicious content. The presence of a known malicious redirector URL further supports this assessment. No scripts were extracted, but the document body and heuristics indicate a lure to a malicious URL.

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=corrugated+cardboard+sheets+pretoria In PDF document text
    • http://files.contessablack.com/uploads/1/3/0/7/130739570/3037b8b16b53.pdfIn PDF document text
    • http://kabutubi.lictusoilandpropane.com/uploads/1/3/1/3/131398294/3091940.pdfIn PDF document text
    • http://jazov.targetedevidence.com/uploads/1/3/2/7/132740470/jebipupup.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0736/9639/files/gatenegef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3834/2311/files/habitos_alimentarios_libros.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6304/9376/files/whirlpool_duet_washer_service_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9990/5429/files/zovigu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6807/1836/files/interactive_electronic_music_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8297/2326/files/86862577773.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/1817/0018/files/cica-_care_scar_treatment_gel_sheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2045/1997/files/86558851590.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5072/9634/files/indesign_print_booklet_to_spreads.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3228/9178/files/64081157271.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0519/0041/files/benefits_of_reading_for_students.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 1

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005a55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A55 5240 bytes
SHA-256: 6604a84bb2ebf6cc517f301bf2d0b07b4708bf39ed178a49c13b3075419ce6d9
font_01_sfnt_off00006c36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C36 10456 bytes
SHA-256: be2e611697fc4a4cd7823bdd3a44e99b935be4ee31e49e27ec37c95bcd2a5714
font_02_sfnt_off00008fca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FCA 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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