Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2030ddc6240aab9…

MALICIOUS

PDF

38.2 KB Created: 2020-08-21 10:41:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: f6381c09ced77245e3d04d79d167d3bb SHA-1: e41663ee45a7c63c5b2fb2b50c77fc3244b648ac SHA-256: c2030ddc6240aab910721f896b5bfe7b2ddc5040423088d8553ec02b3237ed6e
194 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, identified as a link farm, pointing to various domains including a known malicious redirector at 'ttraff.ru'. The ML classifier strongly indicated maliciousness. The document body itself is heavily obfuscated but contains the primary malicious URL, suggesting the document's purpose is to lure users to malicious sites.

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=majnu+old+naa+songs+free In PDF document text
    • http://sikujos.agefriendlysarnia.com/uploads/1/3/2/6/132696056/lerur.pdfIn PDF document text
    • http://files.annettedavisart.com/uploads/1/3/1/0/131071041/jikorinedunen.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/1/0434/5764/2648/files/problems_on_payback_period.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5399/8502/files/fulopowepurogaworap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7267/4209/files/76296542460.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6658/0382/files/januxapev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8012/1506/files/adding_and_subtracting_polynomials_worksheets.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0354/3715/files/delanije.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3236/0613/files/xiruvaxugojebudasi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4320/0929/files/2734971864.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0421/4942/files/1105110568.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0451/8245/1861/files/american_english_file_3_workbook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0897/4235/files/used_rubber_sheet_making_machine_in_kerala.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_off000058d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x58D4 5156 bytes
SHA-256: 267ef0fc31b055ca89dde9f3ff06c01dcaac743dac64232e5dccaef00d7cbbd6
font_01_sfnt_off00006a72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A72 9784 bytes
SHA-256: aa0a322e9258331552305cf8b08543fb1944a5309d71e1ef3b32ba0dad101ea5

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