Malicious PDF — malware analysis report

Static analysis result for SHA-256 eda08f25d7e13861…

MALICIOUS

PDF

82.8 KB Created: 2020-07-31 15:29:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 34431a9e36e24e81210db502fc387ad2 SHA-1: c2a2216b6c2b90bebe447db60449766d91a81bba SHA-256: eda08f25d7e138610006f8cba3a4410c85d0963ea0376f00da5da87660015844
194 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by an ML classifier and contains a significant number of embedded links, with at least one pointing to a known malicious redirector. The presence of a link farm suggests an attempt to distribute malicious content or phish users. The document body is heavily obfuscated and unreadable, providing no further context on the specific lure.

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=char+tolowercase+java In PDF document text
    • http://files.blackfeatherboutique.com/uploads/1/3/1/4/131438299/7398221.pdfIn PDF document text
    • http://files.kirkmahoe.com/uploads/1/3/2/8/132814147/bubatuje_vebedorogumeg.pdfIn PDF document text
    • http://files.smartonlinebookkeeping.net/uploads/1/3/1/0/131071289/c3956e.pdfIn PDF document text
    • http://files.creirlanda.com/uploads/1/3/1/3/131398022/sofazeto.pdfIn PDF document text
    • http://files.legendsgolfclub.org/uploads/1/3/1/3/131383665/6087186.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/1/0439/8442/1022/files/95221037454.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6423/7992/files/66990542260.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4259/5239/files/82053167973.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7552/6042/files/91346324657.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3600/0931/files/4262175728.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5901/2006/files/96901918569.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4852/5206/files/24134979195.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5868/2273/files/17426519132.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0720/3739/files/85267427957.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3075/8054/files/mulobafod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2257/3990/files/xijerepukijozoxif.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_off00010408.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10408 4772 bytes
SHA-256: 722cbd1389504ee826b78a55243f8dec3bea44ad580025ea429ebf4994d0e33b
font_01_sfnt_off00011473.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11473 12388 bytes
SHA-256: fa37eedd9d85bb931dc7a4643a12f6d7c78829ba38c5b59382aa91ed4d614f4e

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