Malicious PDF — malware analysis report

Static analysis result for SHA-256 943cdd2358dc7e17…

MALICIOUS

PDF

53.4 KB Created: 2020-08-04 06:51:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4c8b17fd858a6a7b9922f7a2968ff1a9 SHA-1: 3f2c88436706ececb4d25730b36059efc360b5e2 SHA-256: 943cdd2358dc7e174c0e31f11b724f03e97ae466f8213a02bb63086b2acccb8f
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 external links, indicating a link farm or SEO manipulation tactic. One of the primary links, 'https://ttraff.cc/pify?keyword=cabala+herm%25C3%25A9tica+pdf', is flagged as a malicious redirector. The document body itself is heavily obfuscated and contains metadata suggesting it was generated by wkhtmltopdf, but the primary malicious activity appears to be the distribution of numerous links, some of which lead to potentially harmful content.

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=cabala+herm%25C3%25A9tica+pdf In PDF document text
    • http://files.combatrevamped.com/uploads/1/3/1/6/131606874/jovonasinoxumu.pdfIn PDF document text
    • http://files.fernwehfeels.com/uploads/1/3/0/8/130874102/jijelimixu-ziburaviwiju.pdfIn PDF document text
    • http://files.cohrsfamily.com/uploads/1/3/0/9/130969300/miferepibumedo.pdfIn PDF document text
    • http://files.whitpeters.us/uploads/1/3/1/3/131397987/bugudoje_tosaladu_gupuluvu_pixisirebad.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/1/0431/5345/7320/files/belalatadudipuzidevi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0100/2664/files/jidojim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5699/6247/files/29659454714.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0191/2224/files/gipabebaboxagolide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3983/4780/files/how_to_edit_hosts_file_windows_7.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3069/1496/files/nopewamubibafafifora.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5930/5880/files/rojulawisunufigozazavunu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3418/9734/files/kukafofidasusenujur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0588/5090/files/30980185605.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7832/8224/files/jovuluj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2412/9946/files/mawofuzisam.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9239/3640/files/lubeximogitajogagesope.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2531/8563/files/91276455999.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008a6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A6D 5404 bytes
SHA-256: 70ca8fe532bd73f2acbb3f22343e1b76bcae6c38e70b835b501cfaa49dbb596b
font_01_sfnt_off00009c50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9C50 13288 bytes
SHA-256: 1ffa59fc991358e87e1fac34d301ea0c7b46ee4465b3801c472471aa89c2447f