Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5eabc78957786bd…

MALICIOUS

PDF

40.6 KB Created: 2020-08-12 13:27:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ce358103f7c8effd2c030b3397c3a54a SHA-1: 8dff2c2a8dda8677cd7958b0646045348005ab60 SHA-256: c5eabc78957786bd7d947facf12eb0915ef6f941c31fb4bc16e812f4d6cc206b
194 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating malicious redirection and a link farm, with a primary URL pointing to a redirector. The document body text, though partially corrupted, includes the phrase 'breach of contract notes pdf' and the malicious URL, suggesting a phishing or malware distribution lure. No scripts were extracted, but the PDF structure itself facilitates the redirection.

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=breach+of+contract+notes+pdf In PDF document text
    • http://files.icanillustratemybooks.com/uploads/1/3/0/8/130813526/pivufi.pdfIn PDF document text
    • http://files.risingmeadowpottery.com/uploads/1/3/2/6/132695701/nuwinat_kikaxurex_tefovenupegise_gitowag.pdfIn PDF document text
    • http://zikod.weavingswellness.org/uploads/1/3/0/8/130874493/lifato.pdfIn PDF document text
    • http://nujok.skincarebyjewls.com/uploads/1/3/1/3/131383775/45bc9c.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/1/0433/5930/5880/files/jowedoniwagup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0151/2090/files/general_biology_2_grade_12_module.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8858/4605/files/notivunojepogiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8068/7524/files/defosexokabexujuboketavo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8110/5575/files/34756941671.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7142/9016/files/cursive_capital_alphabet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1501/8392/files/asme_b36._10_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9367/1588/files/les_analyses_mdicales_du_sang.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9711/2219/files/bobodobulud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6563/9069/files/fuvuwefirizenir.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006142.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6142 5260 bytes
SHA-256: 75c06b57399aeeed1d63d9b1f60d574851a0089c2dcc9824fb9301ad8a6b7b64
font_01_sfnt_off0000731c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x731C 10208 bytes
SHA-256: 05c94febf196bdd0f0ab406483c668190ab02fcca7012132ecd8ec5a78069314

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