Malicious PDF — malware analysis report

Static analysis result for SHA-256 19c4c371e1633431…

MALICIOUS

PDF

35.9 KB Created: 2020-08-03 21:21:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6f81e8ce5ecdb6baedcf61bf3272ad2f SHA-1: d58994a08937874755cd2fc480037cd0d75a8c8a SHA-256: 19c4c371e1633431655cb6b3c81e8d94cd2f8d1e32dcd6b8c7ece1c54bd84df1
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on various domains. The primary link, https://ttraff.cc/pify?keyword=cantico+dei+cantici+ravasi+pdf, is identified as a malicious redirector. This suggests the document is designed to lead users to malicious infrastructure through a link farm, likely for further exploitation or phishing. No scripts were extracted from this sample.

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=cantico+dei+cantici+ravasi+pdf In PDF document text
    • http://files.sjvkailua.org/uploads/1/3/1/6/131606839/darupizetelaz.pdfIn PDF document text
    • http://files.facademarketing.com/uploads/1/3/0/8/130814205/783c1a628281446.pdfIn PDF document text
    • http://files.lilysbathsandbiscuits.com/uploads/1/3/0/9/130969689/2ca7f43368c97ef.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/1/0433/0687/7080/files/bepojarovizezeba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3923/4967/files/59457042145.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4392/8726/files/79799245537.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7831/2355/files/fujewamulikepatebupoka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1028/3931/files/javuvurokemavizufofer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0460/8155/files/50050172569.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4506/8699/files/wovotevidagu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5778/3718/files/dipajimanivupogi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8343/2096/files/76782403404.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7590/3383/files/how_much_do_python_programmers_make.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8909/8907/files/xufikokusi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/18491093394.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/benubojebexoreloruva.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_off00004b6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4B6D 5080 bytes
SHA-256: b2b35de96fe42cd97c648587b5ffcb2fe6da5bf3fd4243ff1695d6028c4533d8
font_01_sfnt_off00005cc7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CC7 11124 bytes
SHA-256: 0489c6f1d21154c1a8b3c5fdb0e9b6eb2f1d256f483504a2b1390c982587c2a4

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