Malicious PDF — malware analysis report

Static analysis result for SHA-256 51ff950ffcda275f…

MALICIOUS

PDF

53.7 KB Created: 2020-08-04 23:25:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 02f87060c8844ca95c256b823a3b01c3 SHA-1: 3dfff8f04531688cbfce15713f07bc7b2324b4d0 SHA-256: 51ff950ffcda275fb467afe4f69ef2491c2e0919b7935ba77bb9b7f9cfdfba16
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 a redirector service. The document body, though heavily obfuscated, contains text related to 'Cartesian to cylindrical coordinates pdf' and includes the malicious URL, suggesting a lure to a malicious site. The presence of a malicious redirector link and the sheer volume of embedded links strongly indicate a malicious intent to redirect users to 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=cartesian+to+cylindrical+coordinates+pdf In PDF document text
    • http://files.ourplacelochsidelincluden.com/uploads/1/3/1/4/131483143/f0c02ba.pdfIn PDF document text
    • http://files.geraldinepilgrim.com/uploads/1/3/1/6/131607712/susilikigiguwisom.pdfIn PDF document text
    • http://files.opnrc.org/uploads/1/3/0/8/130814169/565fc1413.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/1/0428/1732/3175/files/95091524774.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3190/3902/files/13969448790.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1468/3813/files/mogilixisovexomikigun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3599/8880/files/93113621319.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1329/8581/files/54635594402.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8148/2919/files/38305433207.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0058/5636/files/77170916992.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2556/3799/files/33577354823.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xirapekewovefosisukepeja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8742/9785/files/dimimi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7543/6698/files/fallout_4_change_face_console.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 2

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_off00006eef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EEF 5156 bytes
SHA-256: d0ec0317030e1a1e73e1070593e727f8b1732e91f2a47b1ebf4bb50a54113647
font_01_sfnt_off0000808d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x808D 16332 bytes
SHA-256: 0022b65b77eeb92239f7d38374195dfce71641835053fbd4fb5d69e67baad395
font_02_sfnt_off0000b47b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB47B 16116 bytes
SHA-256: 9693a288d8291130d0bd62c835c7f4d27879f5b9c42d0079905373d75f1b641f

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