Malicious PDF — malware analysis report

Static analysis result for SHA-256 1850b52d9e3e0a8d…

MALICIOUS

PDF

117.0 KB Created: 2020-07-23 14:48:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 649a039bf9aec0f991b3cde0617fa793 SHA-1: 5012defe8046f41405d42abf3c619c4dd48481ec SHA-256: 1850b52d9e3e0a8dd635c3063f712c44c946ab34c455c47096ff8f6e5ea5bcf3
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links to external websites, many of which are identified as redirectors to malicious infrastructure. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK and PDF_SEO_LINK_FARM indicate a pattern of linking to potentially harmful content, likely for phishing or malware distribution. The ML classifier also strongly indicated maliciousness.

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=plague+history+pdf In PDF document text
    • http://files.exitrealtyeastpm.com/uploads/1/3/0/7/130776049/3196014.pdfIn PDF document text
    • http://files.crazymountainforge.com/uploads/1/3/1/3/131384432/riwilifijez.pdfIn PDF document text
    • http://files.buckinghambear.com/uploads/1/3/0/7/130740298/2e7e74ea99a32.pdfIn PDF document text
    • http://files.hartsvillecommunityplayers.org/uploads/1/3/1/1/131163976/64a4f.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/1/0432/1758/4283/files/15249013168.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2204/9695/files/28181970688.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7372/3800/files/55960137647.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6101/0842/files/29620350858.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8365/3535/files/nonepasopikujopok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8104/0033/files/60817677434.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5625/1555/files/fufelemivaxuretenesawil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/46391305542.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/4565/6488/files/93555954073.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0925/3282/files/81714296240.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 5

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_off000176fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x176FB 5184 bytes
SHA-256: dc96dfc4edc19dcadb4072d0239f9bbb95f62db96ffec604abfa6945e2703713
font_01_sfnt_off000188b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x188B4 12244 bytes
SHA-256: d3a17a258d1c38ebeb50df0fdc5726744311baa0b738722a077a6d65871c2cd7
font_02_sfnt_off0001b123.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B123 16180 bytes
SHA-256: ea60aea6f1610a102d369c28b98639571d166f16f37a817cf41f62260559d62d

Open this report in the interactive analyzer, or submit your own file for analysis.