Malicious PDF — malware analysis report

Static analysis result for SHA-256 a17d0e5f86f2d8e5…

MALICIOUS

PDF

119.5 KB Created: 2020-08-15 01:09:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 860ee992f2d1a383f842f1fe454b5855 SHA-1: fbebf3fe07588315b1f9fe14949f2168795ccc04 SHA-256: a17d0e5f86f2d8e5101c58e69b931cc6095fdcc28899f406ceec744ce00efcea
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains a URL that matches the redirector link found in the heuristics. This indicates the primary purpose is to lure the user to a malicious site via a deceptive link.

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/wb?keyword=cosatu%20policies%20and%20political%20affiliations%20pdf In PDF document text
    • http://negijat.writtenfromwithin.com/uploads/1/3/2/7/132740214/9050437.pdfIn PDF document text
    • http://borulatas.bearspawfair.com/uploads/1/3/0/7/130739720/nelibosonafu_ganusus_pizefolukaf_jusexobavex.pdfIn PDF document text
    • http://files.masiuliai.com/uploads/1/3/0/8/130813756/burom.pdfIn PDF document text
    • http://files.ohioruralwater.org/uploads/1/3/2/3/132303170/1310225.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/1/0429/9200/9379/files/soxikal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7682/6789/files/6699414574.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/6467/1909/files/dojif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1195/5098/files/integral_calculus_feliciano_and_uy.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9433/4870/files/aaos_biceps_tendonitis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4727/3116/files/60216557355.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2866/6785/files/24402623757.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6961/0907/files/zinukolag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0668/1497/files/43466299687.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6046/9660/files/24617740466.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1791/0946/files/spanish_physical_description_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9925/1093/files/quick_study_spanish.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8941/2767/files/97941951555.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 5

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_off00019c16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19C16 4960 bytes
SHA-256: f97ecf03cbf91dfcbdd517ab42972588e72e92cef696b6bcbe4c783abd515f57
font_01_sfnt_off0001ad0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1AD0B 10304 bytes
SHA-256: 7b683f9b65605ab61b039afc8b6608aa3ad7d805401202c7bef3711c2eb3dec5

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