Malicious PDF — malware analysis report

Static analysis result for SHA-256 50ea65f6dc7f05c3…

MALICIOUS

PDF

45.3 KB Created: 2020-07-29 10:23:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 817432e1bed8417ccfe4c45fdaca95a3 SHA-1: 782c72cbb1730b0dff53b86de6555e1164b9fdd4 SHA-256: 50ea65f6dc7f05c358eea713eae81474c6e63ca832cd7b377ce4afd39ad2df19
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a significant number of embedded links, with one specifically pointing to a known malicious redirector. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' indicates a direct link to malicious infrastructure. Additionally, the 'PDF_SEO_LINK_FARM' heuristic suggests a large number of external links, likely for SEO manipulation or to host further malicious content. The document body is heavily obfuscated, preventing a clear understanding of its specific lure, but the presence of numerous links strongly suggests a redirection-based attack pattern.

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.ru/pify?keyword=asc+606+deloitte+pdf In PDF document text
    • http://files.downtowncountrychristmas.com/uploads/1/3/2/6/132683017/kituxelima.pdfIn PDF document text
    • http://files.agnihealth.org/uploads/1/3/1/4/131438639/3028161.pdfIn PDF document text
    • http://files.sweetwoodilstudies.com/uploads/1/3/1/3/131380741/776202.pdfIn PDF document text
    • http://files.nc956.com/uploads/1/3/1/8/131856330/4603187.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/1/0430/4555/2290/files/64438357177.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9753/8203/files/kewisuruv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0507/4838/files/91675723189.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3275/5875/files/juwevobefetafeduvirurebej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2563/6248/files/78998105408.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2312/3100/files/ruviv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4170/9462/files/kosed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1312/8867/files/46845004140.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2598/7734/files/pozekuvamelid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4164/3928/files/wunarogimim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1553/5774/files/gukevok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0821/9547/files/wexenejunijanuludobip.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 4

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_off0000754c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x754C 4808 bytes
SHA-256: 692ac176a9574964a42e106209c107f0b6b2aff782472334da5d1eb3267d0905
font_01_sfnt_off000085ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85AD 10212 bytes
SHA-256: d1ff182ae7146ce365f44313b0a7e264d269fe715c529621ea92851b25e6516a

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