Malicious PDF — malware analysis report

Static analysis result for SHA-256 ebd943f623522d90…

MALICIOUS

PDF

44.1 KB Created: 2020-08-08 19:23:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ba44c4b349d0634f4ad93427d74cdb05 SHA-1: 15dfe43787fce35b38297872dd7c3165fafdba93 SHA-256: ebd943f623522d900f15122640c9a85704261944ccc7a665ddd9ef22234e848e
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one pointing to a known malicious redirector. The document body, though heavily obfuscated, appears to contain the URL that triggers the redirection. This suggests a phishing or SEO poisoning attack aimed at directing users to malicious content.

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=bartholinite+et+grossesse+pdf In PDF document text
    • http://files.firetrailers.com/uploads/1/3/1/4/131453355/bazatipetu.pdfIn PDF document text
    • http://files.cosmeticstandards.org.uk/uploads/1/3/1/6/131606128/wexefasab.pdfIn PDF document text
    • http://files.myclassicmercedes.com/uploads/1/3/1/6/131606878/d720ccbf525180.pdfIn PDF document text
    • http://files.livybella.com/uploads/1/3/2/7/132741109/7624280.pdfIn PDF document text
    • http://files.rehabmri.com/uploads/1/3/1/3/131384583/nowux.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/1/0431/6528/6566/files/lurapupinuxuxuga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/9944/2590/files/general_mathematics_textbook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7327/4018/files/zeferul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3573/7764/files/30189934129.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1093/3414/files/sinunumi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9534/9666/files/exploring_psychology_9th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4969/7959/files/mubuxeditajisu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2469/4939/files/7841957940.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9476/1877/files/zivokabezer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0000/3749/files/bozifutagopawijuka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9331/9079/files/pemukusu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8153/9489/files/5809740506.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1983/7345/files/duderesapimoluvi.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_off00006c10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C10 5352 bytes
SHA-256: a5860cdbb0bc4eaa02b6ccc82b907c145baa4ea6ea55663731081c609116ae97
font_01_sfnt_off00007e43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E43 11556 bytes
SHA-256: 8842dffb132d00530a886992d9247d8107688ed27e1c233e060015cacb3927fe

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