Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1755a6580c8d954…

MALICIOUS

PDF

39.7 KB Created: 2020-03-21 01:39:00 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6) First seen: 2026-05-09
MD5: fffea883fd37e2dd9d0f8e958b47d7f3 SHA-1: 4de1857caa5fbd4e4d946630bbb010777c66a7c8 SHA-256: b1755a6580c8d9543ec0b970f9e2f110b85c4afec9762bb0ef108681d7c8bb84
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a significant number of external links, as indicated by the PDF_SEO_LINK_FARM heuristic. These links point to various PDF files hosted on different domains, suggesting a link farm or a distribution mechanism for further malicious content. The embedded URL also leads to an HTML file with a similar structure. No scripts were extracted from this sample.

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://xtravelise.com/uploads/1/3/0/7/130739211/130739211.html#que+es+calidad+ingenieria+de+software PDF link annotation
    • http://cosy-home.org/uploads/1/3/0/3/130379336/82850.pdfIn PDF document text
    • http://nikolasstrubbe.com/uploads/1/3/0/6/130604744/nasuxu.pdfIn PDF document text
    • http://www.thechicagodame.com/uploads/1/3/0/2/130291030/porosidida_vipazumeviwilis.pdfIn PDF document text
    • http://ilmarihakkola.com/uploads/1/3/0/4/130483937/viselu.pdfIn PDF document text
    • http://webmail.kevinscustomagltd.com/uploads/1/3/0/3/130323928/rutoru-zofax-vubasovokapaj.pdfIn PDF document text
    • http://power101jamz.net/uploads/1/3/0/7/130740357/kasisaporenuz_vugisarujisu_lexazu_lenabutebaba.pdfIn PDF document text
    • http://funeemommy.com/uploads/1/3/0/6/130620579/luroxidubedeke_dapilogo_nevililodud.pdfIn PDF document text
    • http://zennor.co/uploads/1/3/0/8/130814859/7801151.pdfIn PDF document text
    • http://befitish.com/uploads/1/3/0/5/130551639/zetudofafubu-majuguni-rikovona-bujapiwe.pdfIn PDF document text
    • http://cosmicbabies.org/uploads/1/3/0/4/130488542/gumupuroleko.pdfIn PDF document text
    • http://mvstuff.com/uploads/1/3/0/6/130604340/6186935.pdfIn PDF document text
    • http://seattleshawarma.com/uploads/1/3/0/8/130874398/7186164.pdfIn PDF document text
    • http://aaiallaroundinspections.com/uploads/1/3/1/0/131070576/4573749.pdfIn PDF document text
    • http://www.leedsbarber.co.uk/uploads/1/3/0/4/130476339/01a48.pdfIn PDF document text
    • http://ngamountainmercantile.com/uploads/1/3/0/5/130590583/3562808.pdfIn PDF document text
    • http://charlottedreamscapes.com/uploads/1/3/1/0/131069843/wonajanerotamifusafu.pdfIn PDF document text
    • http://surgenorcareers.com/uploads/1/3/0/5/130588744/tedufexesonukipipene.pdfIn PDF document text
    • http://melodygabriel.com/uploads/1/3/0/2/130288562/92ab2216ffa81.pdfIn PDF document text
    • http://parkercarpentrydesigns.com/uploads/1/3/0/7/130775676/1051523.pdfIn PDF document text
    • http://eroanimeland.club/uploads/1/3/0/7/130739275/f93087.pdfIn PDF document text
    • http://www.brewerybooks.com/uploads/1/3/0/5/130588276/ginibatotuz.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 4

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_off00007180.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7180 8164 bytes
SHA-256: cd82f8693730307908c5562fea91a19adfe575814369d3bbe6ce25ac69721ea3

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