Malicious PDF — malware analysis report

Static analysis result for SHA-256 2fc429946b92c0fb…

MALICIOUS

PDF

43.0 KB Created: 2020-08-01 07:16:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5d4107d3d55af3fca5f38ee43eb65a5a SHA-1: cd91fc5e9b255d3cf32c72813d857fd46df88bc2 SHA-256: 2fc429946b92c0fb12610bcc4f4096a580cfa1e372c41b99e864c000217e5473
194 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a primary link to a known malicious redirector. The document body, though heavily obfuscated, contains the same lure text and URLs found in the heuristics, indicating an attempt to trick users into downloading further content. The primary malicious IOC is the redirector URL.

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=intro+stats+4th+edition+pdf+free In PDF document text
    • http://files.cksweets.com/uploads/1/3/0/8/130813782/tufisozajel.pdfIn PDF document text
    • http://files.nakedcakesgallery.com.au/uploads/1/3/0/7/130740012/vudeze.pdfIn PDF document text
    • http://files.johnlinneball.com/uploads/1/3/1/3/131379054/gulir.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2665/3079/files/15921271769.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9389/4044/files/78960138504.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6338/6017/files/nokakagipotobusuxugu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8008/9760/files/kilivuziroxega.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3323/0488/files/if_statement_c.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1212/6882/files/gafuxolikofavobo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9095/8752/files/80580918137.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3407/4523/files/11481923379.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7144/6939/files/levezupopanunef.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/3181/1480/files/99191619494.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8305/5782/files/61420442966.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7567/4024/files/79725882476.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 2

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005cf3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CF3 4912 bytes
SHA-256: 5d247eda77789fa1b1ff2ada989f9f622d441d7737ac8ac7ed81e6f66332a947
font_01_sfnt_off00006d96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D96 10500 bytes
SHA-256: 225aa94d7bac86677c083df8645e15395a12559fd78edd973e233b9b21792dab
font_02_sfnt_off00009141.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9141 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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