Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca249f36339beba8…

MALICIOUS

PDF

39.6 KB Created: 2020-08-15 05:08:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c62a6536e2bb3536b4f344dc564d12f4 SHA-1: 30b0ebeece63d65c5e7763915fe150017ac72ddd SHA-256: ca249f36339beba8140fe7d44326984299eb1be5e8e71d97ccb395f8513f300f
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs, suggesting a link farm for SEO manipulation. One critical heuristic indicates a malicious redirector link to 'ttraff.cc', which is known malicious infrastructure. The document body, though heavily obfuscated, contains text related to 'wild animals worksheets' and the malicious URL, indicating a lure to trick users into clicking the malicious 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.cc/pify?keyword=wild+animals+worksheets+british+council In PDF document text
    • http://lodaz.secondchancesurrogacy.com/uploads/1/3/2/7/132712380/02b4a0235e8e1.pdfIn PDF document text
    • http://files.thrivingdrs.com/uploads/1/3/1/1/131163738/xawokepopeze.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6241/8846/files/razive.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0236/3045/files/kivod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2171/4076/files/neriwigove.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4551/0568/files/48672600324.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/8126/0438/files/tivoze.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7284/0090/files/68069474937.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2905/4118/files/kexatujiwupuvubufi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1081/7180/files/momosuzetisirorin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9809/5272/files/1874408809.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
    • http://www.gnu.org/licenses/gpl.htmlIn PDF document text

Related samples 8

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_off00004b61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4B61 5488 bytes
SHA-256: 94a52f32fc07a617f9e860efa18f2c32bc446140f1a14dc0b3a38ef5349b4afd
font_01_sfnt_off00005de8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DE8 6792 bytes
SHA-256: 23bff5989b61df33442e41ad547222f4234294f54f0f189ce4a936f42214d3fe
font_02_sfnt_off00007010.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7010 9732 bytes
SHA-256: cabd4557e925ba4c340203e7215941fe5692f4d7593eb53cd240aa17d9bc1331

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