Malicious PDF — malware analysis report

Static analysis result for SHA-256 539d705269c805f3…

MALICIOUS

PDF

53.0 KB Created: 2020-08-12 11:12:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b5fd7becb3a2cabbfd815f799a50ebf2 SHA-1: 3bcb6b055dccf98fbcdb9323f09377865f5b27ae SHA-256: 539d705269c805f397b1a3f8aa6b05efdb01845574120f9ec4e93070b3d8235e
194 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to malicious infrastructure, specifically identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains the URL that is also present in the heuristics and the DOC BODY section. This suggests a phishing or redirection attack aimed at delivering further malicious content. The PDF_SEO_LINK_FARM heuristic indicates a large number of outbound links, likely for SEO manipulation or to obscure the malicious destination.

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=public+policy+analysis+notes+pdf In PDF document text
    • http://files.clarionchristianschool.org/uploads/1/3/0/7/130740166/letopalijajefizetu.pdfIn PDF document text
    • http://files.parboldtandoori.co.uk/uploads/1/3/1/3/131384635/lububekase.pdfIn PDF document text
    • http://toleli.ajluxarts.com/uploads/1/3/0/7/130776760/sozotulebu.pdfIn PDF document text
    • http://files.theferntree.com/uploads/1/3/0/7/130740196/pedene_guziw_pumusuz_jalepajuz.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/1/0430/3070/8385/files/43499129931.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3488/5796/files/duwelunivipajafonemama.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1030/8766/files/read_and_highlight_on_ipad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lokilus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0944/0924/files/pokemon_yellow_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2160/6817/files/43924923043.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5936/3488/files/dk_space_encyclopedia_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2619/4342/files/rizuvogokibuvufugodikalo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/6791/1842/files/local_anaesthesia_in_dentistry_book.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 3

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_off00009241.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9241 5296 bytes
SHA-256: 13b38c652045c37f0cfecd290cd9df080a40bbc60cf30ef10403132cb51abd44
font_01_sfnt_off0000a44f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA44F 10188 bytes
SHA-256: c976d8705c451c15fb31e1bdd0987e5c491638f02ff587af65767163eb952d90

Open this report in the interactive analyzer, or submit your own file for analysis.