Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c603b32bd6776d5…

MALICIOUS

PDF

40.2 KB Created: 2020-08-06 13:47:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c7a2c793301d7b4d1487c4e3bd395cd1 SHA-1: 875da32d3b4698e5659a3eeb1217245cb6be579e SHA-256: 4c603b32bd6776d5e11f5f31752056b36a67fb9a6fb037e7c4a6ea944145aa51
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. The ML classifier strongly indicates maliciousness. The primary attack vector appears to be a link farm designed to lure users to malicious infrastructure, likely for phishing or malware distribution.

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=algorithmen+kapieren+pdf In PDF document text
    • http://files.ashtonpwoods.com/uploads/1/3/0/7/130775529/2894744.pdfIn PDF document text
    • http://tekadogiz.stphilipstdenis.com/uploads/1/3/2/7/132710621/mifuwazu_tiwowojif.pdfIn PDF document text
    • http://files.awakeningthedivinewithin.com/uploads/1/3/1/6/131606025/68c0d68e68.pdfIn PDF document text
    • http://files.raedelisle.com/uploads/1/3/0/8/130814466/modeluvetak.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/1/0432/2518/6466/files/42200150275.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9476/0862/files/mupibefafuwawoxebuteguk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6183/0037/files/pozemilotifuliwalurusut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1551/9912/files/40536739492.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0579/5752/files/22328868774.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3735/1323/files/very_hungry_caterpillar_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2417/0664/files/72564907109.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9365/5716/files/xogufopexunenivuvale.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6281/9990/files/71188573855.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4768/2201/files/mopuziwebe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3938/1912/files/gta_5_props.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7547/7414/files/38634600289.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_off00005e82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E82 5332 bytes
SHA-256: 4ff6554273d4622946055c8baeb86ddb3f51f23670e2e3fc51910af3848b8015
font_01_sfnt_off00007077.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7077 10808 bytes
SHA-256: 9d592f9b7209756f0234bed571000c450a10e08a6c39ed5cdbf0539f100bdb43

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