Malicious PDF — malware analysis report

Static analysis result for SHA-256 ecba696dc7b22035…

MALICIOUS

PDF

32.5 KB Created: 2020-08-20 14:11:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8beb75da2bd6fa24e1629b3c9472a984 SHA-1: d24cd89a6b52da2c14d66002047de31921e545dc SHA-256: ecba696dc7b220353f26a378543dc47ee977759a48cfd5687bafd55fd34de111
194 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded external links, a technique often used for SEO link farms or to redirect users to malicious content. One critical heuristic identified a link to a known malicious redirector. The document body is heavily obfuscated and contains metadata indicating it was generated by wkhtmltopdf, suggesting it's not a legitimate document. No scripts were extracted, but the extensive link farm and redirector link strongly indicate a malicious intent to lure users to external, potentially harmful, resources.

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.cc/pify?keyword=cannon+fodder+rom In PDF document text
    • http://mawiluzaj.naturallyliving4life.com/uploads/1/3/1/4/131437454/a07e52a282c47.pdfIn PDF document text
    • http://files.angelmountaininspirations.com/uploads/1/3/2/6/132682862/makidigapuxoxu.pdfIn PDF document text
    • http://files.tvpja.com/uploads/1/3/1/4/131437926/c009210c0aa.pdfIn PDF document text
    • http://kevitap.susansimons.com/uploads/1/3/0/9/130969077/ganejizivewesi.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/1/0432/7243/7910/files/dagolorifexuzosafusel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0009/3083/files/fudotofejajog.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3637/6231/files/74011413505.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0962/2691/files/41474239911.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1378/2178/files/spelling_worksheets_for_grade_1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2920/8986/files/53009482325.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7404/4579/files/10072873911.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5625/0525/files/tesisavalopona.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0306/0128/files/wofexepenijeragema.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0892/5602/files/xujugas.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 6

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_off000043c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x43C1 4748 bytes
SHA-256: 369230a721d7025ad43d50d4d36e0cfacf2e5ca76020e4f9461851c4a2909ee8
font_01_sfnt_off000053cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x53CC 9864 bytes
SHA-256: e4df7ce2001fd3b48d6abe41f391d054082d3f3939080de24dccaf7c436377f0

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