Malicious PDF — malware analysis report

Static analysis result for SHA-256 dfcad16d2618e790…

MALICIOUS

PDF

38.1 KB Created: 2020-03-29 05:45:53 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2026-05-09
MD5: a59cebb6718b03dc581c4875e7c6017f SHA-1: 9359b0b17eb8801d5f95f008ab2240ab491712c9 SHA-256: dfcad16d2618e79002566a057d777398eadde023a3bcbab1a7d8bfbbf8498ac1
96 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which appear to be SEO-optimized lures for downloading academic materials. The primary URL, http://nupelicanparty.org/uploads/1/3/0/6/130621124/130621124.html#satyanarayana+biochemistry+latest+edition+pdf+download, suggests a phishing attempt disguised as a search result. The PDF_SEO_LINK_FARM heuristic indicates a deliberate attempt to create a link farm, likely to distribute malicious content or drive traffic to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://nupelicanparty.org/uploads/1/3/0/6/130621124/130621124.html#satyanarayana+biochemistry+latest+edition+pdf+download PDF link annotation
    • http://moorethemerrier.com/uploads/1/3/0/5/130542770/2046491.pdfIn PDF document text
    • http://ez-inspections.com/uploads/1/3/0/6/130620305/4401051.pdfIn PDF document text
    • http://monitor2.dbazone.com/uploads/1/3/1/0/131070651/53504e.pdfIn PDF document text
    • http://tsfetishmodels.com/uploads/1/3/0/7/130738966/4449925.pdfIn PDF document text
    • http://autodiscover.englishforprofessionals.biz/uploads/1/3/0/5/130539357/rawugir-lowor-joxidogopoxixef.pdfIn PDF document text
    • http://ioncenters.com/uploads/1/3/0/2/130288483/bc82c046ec8a.pdfIn PDF document text
    • http://acmhm.net/uploads/1/3/0/8/130813548/tonibobonewiginasisu.pdfIn PDF document text
    • http://www.theemporiumhires.com/uploads/1/3/0/8/130814754/dorokena_zigoxujel_darelixasi.pdfIn PDF document text
    • http://ristorantepizzeriacasamatta.com/uploads/1/3/0/5/130550981/rinozasupuseru.pdfIn PDF document text
    • http://phone.managemydojo.com/uploads/1/3/0/6/130605115/nizamufizo_pexegaxir_savixumofiwo_dirawozu.pdfIn PDF document text
    • http://hostmaster.sydneybrandingservices.com.au/uploads/1/3/0/3/130379635/wuferubopuvopunemaj.pdfIn PDF document text
    • http://downboat.com/uploads/1/3/0/8/130874455/gevavugosatesixejaw.pdfIn PDF document text
    • http://catholicpraise.com/uploads/1/3/0/3/130313359/2e55d1aef.pdfIn PDF document text
    • http://probizhr.com/uploads/1/3/0/8/130814623/a12a84aa02.pdfIn PDF document text
    • http://www.chrislingmusic.com/uploads/1/3/0/2/130289254/rominowulovijut-pivisum-malidew.pdfIn PDF document text
    • http://natalieelizabethseipert.com/uploads/1/3/0/6/130621402/1390ff3e8f7ae.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

Related samples 2

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006cef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CEF 7584 bytes
SHA-256: d5ad1523ee40c5bb2fcc67c9f26e2a8ef7d2e00d7225ffebba4985a19a7b1a7a

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